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Sports·MLB

Boston Red Sox vs Kansas City Royals

8h 22m 38s
Polymarket
Red Sox
Red Sox
11:40 PMMay 19
Royals
Royals
$72.02K Vol.Polymarket

Moneyline

$61.6K Vol.

Spreads

$1.6K Vol.

Totals

$8.7K Vol.

Will there be a run in the first inning?

$112 Vol.

In the upcoming MLB game between the Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40PM ET: This market will resolve to "Boston Red Sox" if the Boston Red Sox win the game. This market will resolve to "Kansas City Royals" if the Kansas City Royals 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 Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40 PM ET: This market will resolve to "Boston Red Sox" if the Boston Red Sox win the game by 2 or more runs. Otherwise, this market will resolve to "Kansas City Royals". If the game ends in a tie, this market will resolve to "Kansas City Royals". 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 Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40 PM ET: This market will resolve to "Boston Red Sox" if the Boston Red Sox win the game by 4 or more runs. Otherwise, this market will resolve to "Kansas City Royals". If the game ends in a tie, this market will resolve to "Kansas City Royals". 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 Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40 PM ET: This market will resolve to "Boston Red Sox" if the Boston Red Sox win the game by 5 or more runs. Otherwise, this market will resolve to "Kansas City Royals". If the game ends in a tie, this market will resolve to "Kansas City Royals". 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 Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40 PM ET: This market will resolve to "Kansas City Royals" if the Kansas City Royals win the game by 4 or more runs. Otherwise, this market will resolve to "Boston Red Sox". If the game ends in a tie, this market will resolve to "Boston Red Sox". 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 Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40 PM ET: This market will resolve to "Kansas City Royals" if the Kansas City Royals win the game by 3 or more runs. Otherwise, this market will resolve to "Boston Red Sox". If the game ends in a tie, this market will resolve to "Boston Red Sox". 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 Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40 PM ET: This market will resolve to "Kansas City Royals" if the Kansas City Royals win the game by 2 or more runs. Otherwise, this market will resolve to "Boston Red Sox". If the game ends in a tie, this market will resolve to "Boston Red Sox". 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 Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40 PM ET: This market will resolve to "Boston Red Sox" if the Boston Red Sox win the game by 3 or more runs. Otherwise, this market will resolve to "Kansas City Royals". If the game ends in a tie, this market will resolve to "Kansas City Royals". 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 Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40 PM ET: This market will resolve to "Over" if the Boston Red Sox and Kansas City Royals 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 Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40 PM ET: This market will resolve to "Over" if the Boston Red Sox and Kansas City Royals combine to score 12 or more runs in this game. If the combined total is less than 12, 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 Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40 PM ET: This market will resolve to "Over" if the Boston Red Sox and Kansas City Royals 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 Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40 PM ET: This market will resolve to "Over" if the Boston Red Sox and Kansas City Royals 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 Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40 PM ET: This market will resolve to "Over" if the Boston Red Sox and Kansas City Royals 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 Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40 PM ET: This market will resolve to "Over" if the Boston Red Sox and Kansas City Royals 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 Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40 PM ET: This market will resolve to "Over" if the Boston Red Sox and Kansas City Royals 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 Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40 PM ET: This market will resolve to "Yes" if at least one run is scored in the 1st inning by either the Boston Red Sox or Kansas City Royals. 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 interleague series with sub-.500 records and similar offensive struggles, as the Red Sox sit at 19-27 in the AL East while the Royals stand at 20-27 in the AL Central. Boston snapped a skid with a 3-1 road win on May 18 behind Sonny Gray’s season-high nine strikeouts over six innings, but the club continues to manage multiple absences including outfielder Roman Anthony and shortstop Trevor Story. Kansas City’s rotation has taken hits with starters Cole Ragans and Kris Bubic on the injured list, leaving the club to rely on depth options against a Red Sox lineup that has shown power in recent weeks. Home-field play at Kauffman Stadium and bullpen usage will likely shape the next two games, with both clubs facing tight schedules and limited rest.

In the upcoming MLB game between the Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40PM ET:

This market will resolve to "Boston Red Sox" if the Boston Red Sox win the game.

This market will resolve to "Kansas City Royals" if the Kansas City Royals 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
$72,017
End Date
May 26, 2026
Market Opened
May 13, 2026, 9:00 AM ET

Resolution Source

https://www.mlb.com/

Resolver

0x65070BE91...
In the upcoming MLB game between the Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40PM ET: This market will resolve to "Boston Red Sox" if the Boston Red Sox win the game. This market will resolve to "Kansas City Royals" if the Kansas City Royals 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 “Royals vs. Red Sox” market on Polymarket lets you trade on the outcome of the MLB game between the Kansas City Royals and the Boston Red Sox, scheduled for May 19, 2026 at 7:40 PM ET. The primary market is the moneyline — which team will win the game — where Red Sox is currently priced at 55¢ (55% implied probability) and Royals at 46¢ (46%). 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 “Royals vs. Red Sox” market has generated $72K 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 “Royals vs. Red Sox,” 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 KC at 46¢ and BOS at 55¢. 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 “Royals vs. Red Sox” show Boston Red Sox at 55¢ (55% implied probability) and Kansas City Royals at 46¢ (46%). 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 “Royals vs. Red Sox” 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

Boston Red Sox vs Kansas City Royals

8h 22m 38s
Polymarket
Red Sox
Red Sox
11:40 PMMay 19
Royals
Royals
$72.02K Vol.Polymarket

Moneyline

$61.6K Vol.

Spreads

$1.6K Vol.

Totals

$8.7K Vol.

Will there be a run in the first inning?

$112 Vol.

In the upcoming MLB game between the Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40PM ET: This market will resolve to "Boston Red Sox" if the Boston Red Sox win the game. This market will resolve to "Kansas City Royals" if the Kansas City Royals 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 Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40 PM ET: This market will resolve to "Boston Red Sox" if the Boston Red Sox win the game by 2 or more runs. Otherwise, this market will resolve to "Kansas City Royals". If the game ends in a tie, this market will resolve to "Kansas City Royals". 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 Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40 PM ET: This market will resolve to "Boston Red Sox" if the Boston Red Sox win the game by 4 or more runs. Otherwise, this market will resolve to "Kansas City Royals". If the game ends in a tie, this market will resolve to "Kansas City Royals". 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 Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40 PM ET: This market will resolve to "Boston Red Sox" if the Boston Red Sox win the game by 5 or more runs. Otherwise, this market will resolve to "Kansas City Royals". If the game ends in a tie, this market will resolve to "Kansas City Royals". 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 Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40 PM ET: This market will resolve to "Kansas City Royals" if the Kansas City Royals win the game by 4 or more runs. Otherwise, this market will resolve to "Boston Red Sox". If the game ends in a tie, this market will resolve to "Boston Red Sox". 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 Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40 PM ET: This market will resolve to "Kansas City Royals" if the Kansas City Royals win the game by 3 or more runs. Otherwise, this market will resolve to "Boston Red Sox". If the game ends in a tie, this market will resolve to "Boston Red Sox". 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 Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40 PM ET: This market will resolve to "Kansas City Royals" if the Kansas City Royals win the game by 2 or more runs. Otherwise, this market will resolve to "Boston Red Sox". If the game ends in a tie, this market will resolve to "Boston Red Sox". 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 Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40 PM ET: This market will resolve to "Boston Red Sox" if the Boston Red Sox win the game by 3 or more runs. Otherwise, this market will resolve to "Kansas City Royals". If the game ends in a tie, this market will resolve to "Kansas City Royals". 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 Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40 PM ET: This market will resolve to "Over" if the Boston Red Sox and Kansas City Royals 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 Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40 PM ET: This market will resolve to "Over" if the Boston Red Sox and Kansas City Royals combine to score 12 or more runs in this game. If the combined total is less than 12, 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 Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40 PM ET: This market will resolve to "Over" if the Boston Red Sox and Kansas City Royals 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 Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40 PM ET: This market will resolve to "Over" if the Boston Red Sox and Kansas City Royals 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 Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40 PM ET: This market will resolve to "Over" if the Boston Red Sox and Kansas City Royals 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 Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40 PM ET: This market will resolve to "Over" if the Boston Red Sox and Kansas City Royals 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 Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40 PM ET: This market will resolve to "Over" if the Boston Red Sox and Kansas City Royals 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 Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40 PM ET: This market will resolve to "Yes" if at least one run is scored in the 1st inning by either the Boston Red Sox or Kansas City Royals. 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 interleague series with sub-.500 records and similar offensive struggles, as the Red Sox sit at 19-27 in the AL East while the Royals stand at 20-27 in the AL Central. Boston snapped a skid with a 3-1 road win on May 18 behind Sonny Gray’s season-high nine strikeouts over six innings, but the club continues to manage multiple absences including outfielder Roman Anthony and shortstop Trevor Story. Kansas City’s rotation has taken hits with starters Cole Ragans and Kris Bubic on the injured list, leaving the club to rely on depth options against a Red Sox lineup that has shown power in recent weeks. Home-field play at Kauffman Stadium and bullpen usage will likely shape the next two games, with both clubs facing tight schedules and limited rest.

In the upcoming MLB game between the Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40PM ET:

This market will resolve to "Boston Red Sox" if the Boston Red Sox win the game.

This market will resolve to "Kansas City Royals" if the Kansas City Royals 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
$72,017
End Date
May 26, 2026
Market Opened
May 13, 2026, 9:00 AM ET

Resolution Source

https://www.mlb.com/

Resolver

0x65070BE91...
In the upcoming MLB game between the Boston Red Sox and Kansas City Royals, scheduled for May 19 at 7:40PM ET: This market will resolve to "Boston Red Sox" if the Boston Red Sox win the game. This market will resolve to "Kansas City Royals" if the Kansas City Royals 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 “Royals vs. Red Sox” market on Polymarket lets you trade on the outcome of the MLB game between the Kansas City Royals and the Boston Red Sox, scheduled for May 19, 2026 at 7:40 PM ET. The primary market is the moneyline — which team will win the game — where Red Sox is currently priced at 55¢ (55% implied probability) and Royals at 46¢ (46%). 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 “Royals vs. Red Sox” market has generated $72K 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 “Royals vs. Red Sox,” 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 KC at 46¢ and BOS at 55¢. 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 “Royals vs. Red Sox” show Boston Red Sox at 55¢ (55% implied probability) and Kansas City Royals at 46¢ (46%). 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 “Royals vs. Red Sox” 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.