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Sports·MLB

Seattle Mariners vs Kansas City Royals

5d 1h
Polymarket
Mariners
Mariners
11:40 PMMay 22
Royals
Royals
$20.00 Vol.Polymarket

Moneyline

$20 Vol.

Will there be a run in the first inning?

$0 Vol.

In the upcoming MLB game between the Seattle Mariners and Kansas City Royals, scheduled for May 22 at 7:40PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mariners 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 Seattle Mariners and Kansas City Royals, scheduled for May 22 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 Seattle Mariners 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.The recent three-game sweep by the Kansas City Royals over the Seattle Mariners at T-Mobile Park highlighted Kansas City's improved road form and pitching depth, with Kris Bubic delivering seven strong innings in the finale while the offense capitalized on timely hitting from Vinnie Pasquantino and Maikel Garcia. Mariners starters like Emerson Hancock showed strikeout ability but struggled to limit damage in extra-inning losses, reflecting ongoing rotation inconsistencies amid a middling home record. With the teams set to meet again later this month at Kauffman Stadium, factors such as Seattle's home/away splits, Kansas City's quality starts, and both clubs' AL standings positioning could shape outcomes, though baseball's inherent variability leaves room for adjustments based on fresh injury reports and recent momentum.

In the upcoming MLB game between the Seattle Mariners and Kansas City Royals, scheduled for May 22 at 7:40PM ET:

This market will resolve to "Seattle Mariners" if the Seattle Mariners 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
$20
End Date
May 29, 2026
Market Opened
May 16, 2026, 9:00 AM ET

Resolution Source

https://www.mlb.com/

Resolver

0x65070BE91...
In the upcoming MLB game between the Seattle Mariners and Kansas City Royals, scheduled for May 22 at 7:40PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mariners 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.

Beware of external links.

Frequently Asked Questions

The “Royals vs. Mariners” market on Polymarket lets you trade on the outcome of the MLB game between the Kansas City Royals and the Seattle Mariners, scheduled for May 22, 2026 at 7:40 PM ET. The primary market is the moneyline — which team will win the game — where Royals is currently priced at 58¢ (58% implied probability) and Mariners at 42¢ (42%). 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. Mariners” market has generated $20 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. Mariners,” 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 58¢ and SEA at 42¢. 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. Mariners” show Kansas City Royals at 58¢ (58% implied probability) and Seattle Mariners at 42¢ (42%). 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. Mariners” 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

Seattle Mariners vs Kansas City Royals

5d 1h
Polymarket
Mariners
Mariners
11:40 PMMay 22
Royals
Royals
$20.00 Vol.Polymarket

Moneyline

$20 Vol.

Will there be a run in the first inning?

$0 Vol.

In the upcoming MLB game between the Seattle Mariners and Kansas City Royals, scheduled for May 22 at 7:40PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mariners 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 Seattle Mariners and Kansas City Royals, scheduled for May 22 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 Seattle Mariners 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.The recent three-game sweep by the Kansas City Royals over the Seattle Mariners at T-Mobile Park highlighted Kansas City's improved road form and pitching depth, with Kris Bubic delivering seven strong innings in the finale while the offense capitalized on timely hitting from Vinnie Pasquantino and Maikel Garcia. Mariners starters like Emerson Hancock showed strikeout ability but struggled to limit damage in extra-inning losses, reflecting ongoing rotation inconsistencies amid a middling home record. With the teams set to meet again later this month at Kauffman Stadium, factors such as Seattle's home/away splits, Kansas City's quality starts, and both clubs' AL standings positioning could shape outcomes, though baseball's inherent variability leaves room for adjustments based on fresh injury reports and recent momentum.

In the upcoming MLB game between the Seattle Mariners and Kansas City Royals, scheduled for May 22 at 7:40PM ET:

This market will resolve to "Seattle Mariners" if the Seattle Mariners 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
$20
End Date
May 29, 2026
Market Opened
May 16, 2026, 9:00 AM ET

Resolution Source

https://www.mlb.com/

Resolver

0x65070BE91...
In the upcoming MLB game between the Seattle Mariners and Kansas City Royals, scheduled for May 22 at 7:40PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mariners 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.

Beware of external links.

Frequently Asked Questions

The “Royals vs. Mariners” market on Polymarket lets you trade on the outcome of the MLB game between the Kansas City Royals and the Seattle Mariners, scheduled for May 22, 2026 at 7:40 PM ET. The primary market is the moneyline — which team will win the game — where Royals is currently priced at 58¢ (58% implied probability) and Mariners at 42¢ (42%). 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. Mariners” market has generated $20 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. Mariners,” 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 58¢ and SEA at 42¢. 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. Mariners” show Kansas City Royals at 58¢ (58% implied probability) and Seattle Mariners at 42¢ (42%). 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. Mariners” 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.