Skip to main content
Sports·MLB

Boston Red Sox vs Kansas City Royals

2d 4h
Polymarket
Red Sox
Red Sox
11:40 PMMay 18
Royals
Royals
$45.05 Vol.Polymarket

Moneyline

$45 Vol.

Will there be a run in the first inning?

$0 Vol.

In the upcoming MLB game between the Boston Red Sox and Kansas City Royals, scheduled for May 18 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 18 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 the three-game series at Kauffman Stadium with sub-.500 records, the Red Sox sitting near the bottom of the AL East and the Royals in the middle of the AL Central. Boston’s rotation has been thinned by multiple injuries, including starters Kutter Crawford and Garrett Crochet on the 15-day IL plus outfielder Roman Anthony sidelined with a wrist sprain, while first baseman Willson Contreras remains day-to-day with a hand issue. Kansas City’s staff looks comparatively intact, with Seth Lugo slated to oppose Brayan Bello in the opener. Recent form favors the Royals’ home performance and bullpen stability, though Boston’s offense has shown occasional power surges when healthy. Weather in the Midwest remains mild with no precipitation concerns through the series.

In the upcoming MLB game between the Boston Red Sox and Kansas City Royals, scheduled for May 18 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
$45
End Date
May 25, 2026
Market Opened
May 12, 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 18 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.

Beware of external links.

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 18, 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 45¢ (45%). 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 $45 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 45¢ 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 45¢ (45%). 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

2d 4h
Polymarket
Red Sox
Red Sox
11:40 PMMay 18
Royals
Royals
$45.05 Vol.Polymarket

Moneyline

$45 Vol.

Will there be a run in the first inning?

$0 Vol.

In the upcoming MLB game between the Boston Red Sox and Kansas City Royals, scheduled for May 18 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 18 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 the three-game series at Kauffman Stadium with sub-.500 records, the Red Sox sitting near the bottom of the AL East and the Royals in the middle of the AL Central. Boston’s rotation has been thinned by multiple injuries, including starters Kutter Crawford and Garrett Crochet on the 15-day IL plus outfielder Roman Anthony sidelined with a wrist sprain, while first baseman Willson Contreras remains day-to-day with a hand issue. Kansas City’s staff looks comparatively intact, with Seth Lugo slated to oppose Brayan Bello in the opener. Recent form favors the Royals’ home performance and bullpen stability, though Boston’s offense has shown occasional power surges when healthy. Weather in the Midwest remains mild with no precipitation concerns through the series.

In the upcoming MLB game between the Boston Red Sox and Kansas City Royals, scheduled for May 18 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
$45
End Date
May 25, 2026
Market Opened
May 12, 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 18 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.

Beware of external links.

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 18, 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 45¢ (45%). 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 $45 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 45¢ 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 45¢ (45%). 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.