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Sports·MLB

St. Louis Cardinals vs Pittsburgh Pirates

1h 53m 13s
Polymarket
Pirates
Pirates
5:15 PMMay 21
Cardinals
Cardinals
$469.99K Vol.Polymarket

Moneyline

$133K Vol.

Spreads

$15.2K Vol.

Totals

$321K Vol.

Will there be a run in the first inning?

$330 Vol.

In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15PM ET: This market will resolve to "Pittsburgh Pirates" if the Pittsburgh Pirates win the game. This market will resolve to "St. Louis Cardinals" if the St. Louis Cardinals win the game. If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, or ends in a tie, this market will resolve 50-50. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15 PM ET: This market will resolve to "Pittsburgh Pirates" if the Pittsburgh Pirates win the game by 3 or more runs. Otherwise, this market will resolve to "St. Louis Cardinals". If the game ends in a tie, this market will resolve to "St. Louis Cardinals". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15 PM ET: This market will resolve to "Pittsburgh Pirates" if the Pittsburgh Pirates win the game by 4 or more runs. Otherwise, this market will resolve to "St. Louis Cardinals". If the game ends in a tie, this market will resolve to "St. Louis Cardinals". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15 PM ET: This market will resolve to "St. Louis Cardinals" if the St. Louis Cardinals win the game by 4 or more runs. Otherwise, this market will resolve to "Pittsburgh Pirates". If the game ends in a tie, this market will resolve to "Pittsburgh Pirates". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15 PM ET: This market will resolve to "St. Louis Cardinals" if the St. Louis Cardinals win the game by 3 or more runs. Otherwise, this market will resolve to "Pittsburgh Pirates". If the game ends in a tie, this market will resolve to "Pittsburgh Pirates". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15 PM ET: This market will resolve to "St. Louis Cardinals" if the St. Louis Cardinals win the game by 2 or more runs. Otherwise, this market will resolve to "Pittsburgh Pirates". If the game ends in a tie, this market will resolve to "Pittsburgh Pirates". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15 PM ET: This market will resolve to "Pittsburgh Pirates" if the Pittsburgh Pirates win the game by 5 or more runs. Otherwise, this market will resolve to "St. Louis Cardinals". If the game ends in a tie, this market will resolve to "St. Louis Cardinals". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15 PM ET: This market will resolve to "Pittsburgh Pirates" if the Pittsburgh Pirates win the game by 2 or more runs. Otherwise, this market will resolve to "St. Louis Cardinals". If the game ends in a tie, this market will resolve to "St. Louis Cardinals". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15 PM ET: This market will resolve to "Over" if the Pittsburgh Pirates and St. Louis Cardinals combine to score 11 or more runs in this game. If the combined total is less than 11, this market will resolve to "Under". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15 PM ET: This market will resolve to "Over" if the Pittsburgh Pirates and St. Louis Cardinals combine to score 5 or more runs in this game. If the combined total is less than 5, this market will resolve to "Under". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15 PM ET: This market will resolve to "Over" if the Pittsburgh Pirates and St. Louis Cardinals combine to score 6 or more runs in this game. If the combined total is less than 6, this market will resolve to "Under". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15 PM ET: This market will resolve to "Over" if the Pittsburgh Pirates and St. Louis Cardinals combine to score 7 or more runs in this game. If the combined total is less than 7, this market will resolve to "Under". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15 PM ET: This market will resolve to "Over" if the Pittsburgh Pirates and St. Louis Cardinals combine to score 9 or more runs in this game. If the combined total is less than 9, this market will resolve to "Under". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15 PM ET: This market will resolve to "Over" if the Pittsburgh Pirates and St. Louis Cardinals combine to score 10 or more runs in this game. If the combined total is less than 10, this market will resolve to "Under". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15 PM ET: This market will resolve to "Over" if the Pittsburgh Pirates and St. Louis Cardinals combine to score 8 or more runs in this game. If the combined total is less than 8, this market will resolve to "Under". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15 PM ET: This market will resolve to "Yes" if at least one run is scored in the 1st inning by either the Pittsburgh Pirates or St. Louis Cardinals. This market will resolve to "No" if no runs are scored in the 1st inning by either team. If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.Both teams enter this NL Central matchup with surprising 2026 success, as the Cardinals sit at 27-19 and the Pirates at 24-23, each exceeding preseason projections in a tightly contested division. St. Louis carries recent momentum after a 9-6 extra-inning victory over Pittsburgh on May 19, capped by Ivan Herrera’s three-run walk-off homer following Matthew Liberatore’s career-high nine strikeouts. The Pirates counter with strong starting pitching depth, including ace Paul Skenes, and solid run prevention, though their offense has lagged behind division rivals. Upcoming factors include bullpen reliability in late innings and how each club handles the other’s power threats, with traders closely tracking any last-minute lineup or injury adjustments that could shift implied probabilities.

In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15PM ET:

This market will resolve to "Pittsburgh Pirates" if the Pittsburgh Pirates win the game.

This market will resolve to "St. Louis Cardinals" if the St. Louis Cardinals win the game.

If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, or ends in a tie, this market will resolve 50-50.

The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.
Volume
$454,180
End Date
May 28, 2026
Market Opened
May 15, 2026, 9:00 AM ET

Resolution Source

https://www.mlb.com/

Resolver

0x65070BE91...
In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15PM ET: This market will resolve to "Pittsburgh Pirates" if the Pittsburgh Pirates win the game. This market will resolve to "St. Louis Cardinals" if the St. Louis Cardinals win the game. If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, or ends in a tie, this market will resolve 50-50. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.

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Frequently Asked Questions

The “Pirates vs. Cardinals” market on Polymarket lets you trade on the outcome of the MLB game between the Pittsburgh Pirates and the St. Louis Cardinals, scheduled for May 21, 2026 at 1:15 PM ET. The primary market is the moneyline — which team will win the game — where Cardinals is currently priced at 52¢ (52% implied probability) and Pirates at 49¢ (49%). Beyond the moneyline, sports markets on Polymarket may feature spreads, totals (over/under), and player props, giving you multiple ways to trade on this game. Prices reflect real-time crowd-sourced probabilities. Shares in the correct outcome pay out $1 each when the market resolves after the game ends.

As of now, the “Pirates vs. Cardinals” market has generated $454.2K in total trading volume across all market types (moneyline, spreads, totals, and player props). This volume reflects active engagement from the Polymarket trading community, and a deeper pool of traders generally means more informative, reliable odds. You can track live price movements and trade on any market directly on this page.

To trade on “Pirates vs. Cardinals,” start by choosing the market type you want to trade: Moneyline (which team wins), Spreads (margin of victory), Totals (combined score over/under), or Player Props (individual player stat lines). Each market shows the current price for each side — for example, the moneyline shows PIT at 49¢ and STL at 52¢. Select the side you want to trade, choose Buy to take a position or Sell to close an existing one, enter your amount, and click Trade. If your chosen side is correct when the game ends and the market resolves, your shares pay out $1 each. If it’s incorrect, they pay out $0. You can also sell your shares at any time before the game ends to lock in a profit or cut a loss.

The current moneyline odds for “Pirates vs. Cardinals” show St. Louis Cardinals at 52¢ (52% implied probability) and Pittsburgh Pirates at 49¢ (49%). All odds update in real-time as traders buy and sell shares, reflecting the latest collective view of how this game will play out. Check back frequently or bookmark this page to follow how the odds shift as game time approaches.

The “Pirates vs. Cardinals” market resolves based on the official final score of the MLB game as reported by MLB’s official results, including overtime if applicable. Moneyline markets resolve to the team that wins the game. Spread markets resolve based on the final margin of victory relative to the posted line. Totals (over/under) markets resolve based on the combined final score of both teams. Player prop markets resolve based on official box score statistics. If the game is postponed or canceled, the market resolution rules (available in the Rules section on this page) specify how that scenario is handled. We recommend reviewing the full resolution criteria before trading.
Sports·MLB

St. Louis Cardinals vs Pittsburgh Pirates

1h 53m 13s
Polymarket
Pirates
Pirates
5:15 PMMay 21
Cardinals
Cardinals
$469.99K Vol.Polymarket

Moneyline

$133K Vol.

Spreads

$15.2K Vol.

Totals

$321K Vol.

Will there be a run in the first inning?

$330 Vol.

In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15PM ET: This market will resolve to "Pittsburgh Pirates" if the Pittsburgh Pirates win the game. This market will resolve to "St. Louis Cardinals" if the St. Louis Cardinals win the game. If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, or ends in a tie, this market will resolve 50-50. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15 PM ET: This market will resolve to "Pittsburgh Pirates" if the Pittsburgh Pirates win the game by 3 or more runs. Otherwise, this market will resolve to "St. Louis Cardinals". If the game ends in a tie, this market will resolve to "St. Louis Cardinals". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15 PM ET: This market will resolve to "Pittsburgh Pirates" if the Pittsburgh Pirates win the game by 4 or more runs. Otherwise, this market will resolve to "St. Louis Cardinals". If the game ends in a tie, this market will resolve to "St. Louis Cardinals". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15 PM ET: This market will resolve to "St. Louis Cardinals" if the St. Louis Cardinals win the game by 4 or more runs. Otherwise, this market will resolve to "Pittsburgh Pirates". If the game ends in a tie, this market will resolve to "Pittsburgh Pirates". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15 PM ET: This market will resolve to "St. Louis Cardinals" if the St. Louis Cardinals win the game by 3 or more runs. Otherwise, this market will resolve to "Pittsburgh Pirates". If the game ends in a tie, this market will resolve to "Pittsburgh Pirates". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15 PM ET: This market will resolve to "St. Louis Cardinals" if the St. Louis Cardinals win the game by 2 or more runs. Otherwise, this market will resolve to "Pittsburgh Pirates". If the game ends in a tie, this market will resolve to "Pittsburgh Pirates". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15 PM ET: This market will resolve to "Pittsburgh Pirates" if the Pittsburgh Pirates win the game by 5 or more runs. Otherwise, this market will resolve to "St. Louis Cardinals". If the game ends in a tie, this market will resolve to "St. Louis Cardinals". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15 PM ET: This market will resolve to "Pittsburgh Pirates" if the Pittsburgh Pirates win the game by 2 or more runs. Otherwise, this market will resolve to "St. Louis Cardinals". If the game ends in a tie, this market will resolve to "St. Louis Cardinals". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15 PM ET: This market will resolve to "Over" if the Pittsburgh Pirates and St. Louis Cardinals combine to score 11 or more runs in this game. If the combined total is less than 11, this market will resolve to "Under". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15 PM ET: This market will resolve to "Over" if the Pittsburgh Pirates and St. Louis Cardinals combine to score 5 or more runs in this game. If the combined total is less than 5, this market will resolve to "Under". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15 PM ET: This market will resolve to "Over" if the Pittsburgh Pirates and St. Louis Cardinals combine to score 6 or more runs in this game. If the combined total is less than 6, this market will resolve to "Under". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15 PM ET: This market will resolve to "Over" if the Pittsburgh Pirates and St. Louis Cardinals combine to score 7 or more runs in this game. If the combined total is less than 7, this market will resolve to "Under". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15 PM ET: This market will resolve to "Over" if the Pittsburgh Pirates and St. Louis Cardinals combine to score 9 or more runs in this game. If the combined total is less than 9, this market will resolve to "Under". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15 PM ET: This market will resolve to "Over" if the Pittsburgh Pirates and St. Louis Cardinals combine to score 10 or more runs in this game. If the combined total is less than 10, this market will resolve to "Under". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15 PM ET: This market will resolve to "Over" if the Pittsburgh Pirates and St. Louis Cardinals combine to score 8 or more runs in this game. If the combined total is less than 8, this market will resolve to "Under". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15 PM ET: This market will resolve to "Yes" if at least one run is scored in the 1st inning by either the Pittsburgh Pirates or St. Louis Cardinals. This market will resolve to "No" if no runs are scored in the 1st inning by either team. If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.Both teams enter this NL Central matchup with surprising 2026 success, as the Cardinals sit at 27-19 and the Pirates at 24-23, each exceeding preseason projections in a tightly contested division. St. Louis carries recent momentum after a 9-6 extra-inning victory over Pittsburgh on May 19, capped by Ivan Herrera’s three-run walk-off homer following Matthew Liberatore’s career-high nine strikeouts. The Pirates counter with strong starting pitching depth, including ace Paul Skenes, and solid run prevention, though their offense has lagged behind division rivals. Upcoming factors include bullpen reliability in late innings and how each club handles the other’s power threats, with traders closely tracking any last-minute lineup or injury adjustments that could shift implied probabilities.

In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15PM ET:

This market will resolve to "Pittsburgh Pirates" if the Pittsburgh Pirates win the game.

This market will resolve to "St. Louis Cardinals" if the St. Louis Cardinals win the game.

If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, or ends in a tie, this market will resolve 50-50.

The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.
Volume
$454,180
End Date
May 28, 2026
Market Opened
May 15, 2026, 9:00 AM ET

Resolution Source

https://www.mlb.com/

Resolver

0x65070BE91...
In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15PM ET: This market will resolve to "Pittsburgh Pirates" if the Pittsburgh Pirates win the game. This market will resolve to "St. Louis Cardinals" if the St. Louis Cardinals win the game. If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, or ends in a tie, this market will resolve 50-50. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.

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Frequently Asked Questions

The “Pirates vs. Cardinals” market on Polymarket lets you trade on the outcome of the MLB game between the Pittsburgh Pirates and the St. Louis Cardinals, scheduled for May 21, 2026 at 1:15 PM ET. The primary market is the moneyline — which team will win the game — where Cardinals is currently priced at 52¢ (52% implied probability) and Pirates at 49¢ (49%). Beyond the moneyline, sports markets on Polymarket may feature spreads, totals (over/under), and player props, giving you multiple ways to trade on this game. Prices reflect real-time crowd-sourced probabilities. Shares in the correct outcome pay out $1 each when the market resolves after the game ends.

As of now, the “Pirates vs. Cardinals” market has generated $454.2K in total trading volume across all market types (moneyline, spreads, totals, and player props). This volume reflects active engagement from the Polymarket trading community, and a deeper pool of traders generally means more informative, reliable odds. You can track live price movements and trade on any market directly on this page.

To trade on “Pirates vs. Cardinals,” start by choosing the market type you want to trade: Moneyline (which team wins), Spreads (margin of victory), Totals (combined score over/under), or Player Props (individual player stat lines). Each market shows the current price for each side — for example, the moneyline shows PIT at 49¢ and STL at 52¢. Select the side you want to trade, choose Buy to take a position or Sell to close an existing one, enter your amount, and click Trade. If your chosen side is correct when the game ends and the market resolves, your shares pay out $1 each. If it’s incorrect, they pay out $0. You can also sell your shares at any time before the game ends to lock in a profit or cut a loss.

The current moneyline odds for “Pirates vs. Cardinals” show St. Louis Cardinals at 52¢ (52% implied probability) and Pittsburgh Pirates at 49¢ (49%). All odds update in real-time as traders buy and sell shares, reflecting the latest collective view of how this game will play out. Check back frequently or bookmark this page to follow how the odds shift as game time approaches.

The “Pirates vs. Cardinals” market resolves based on the official final score of the MLB game as reported by MLB’s official results, including overtime if applicable. Moneyline markets resolve to the team that wins the game. Spread markets resolve based on the final margin of victory relative to the posted line. Totals (over/under) markets resolve based on the combined final score of both teams. Player prop markets resolve based on official box score statistics. If the game is postponed or canceled, the market resolution rules (available in the Rules section on this page) specify how that scenario is handled. We recommend reviewing the full resolution criteria before trading.