Skip to main content
Sports·MLB

Seattle Mariners vs Houston Astros

4h 26m 26s
Polymarket
Mariners
Mariners
12:10 AMMay 14
Astros
Astros
$50.28K Vol.Polymarket

Moneyline

$46.7K Vol.

Spreads

$2.3K Vol.

Totals

$2.0K Vol.

Will there be a run in the first inning?

$8 Vol.

In the upcoming MLB game between the Seattle Mariners and Houston Astros, scheduled for May 13 at 8:10PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game. This market will resolve to "Houston Astros" if the Houston Astros 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 Houston Astros, scheduled for May 13 at 8:10 PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game by 2 or more runs. Otherwise, this market will resolve to "Houston Astros". If the game ends in a tie, this market will resolve to "Houston Astros". 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 Seattle Mariners and Houston Astros, scheduled for May 13 at 8:10 PM ET: This market will resolve to "Houston Astros" if the Houston Astros win the game by 4 or more runs. Otherwise, this market will resolve to "Seattle Mariners". If the game ends in a tie, this market will resolve to "Seattle Mariners". 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 Seattle Mariners and Houston Astros, scheduled for May 13 at 8:10 PM ET: This market will resolve to "Houston Astros" if the Houston Astros win the game by 3 or more runs. Otherwise, this market will resolve to "Seattle Mariners". If the game ends in a tie, this market will resolve to "Seattle Mariners". 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 Seattle Mariners and Houston Astros, scheduled for May 13 at 8:10 PM ET: This market will resolve to "Houston Astros" if the Houston Astros win the game by 2 or more runs. Otherwise, this market will resolve to "Seattle Mariners". If the game ends in a tie, this market will resolve to "Seattle Mariners". 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 Seattle Mariners and Houston Astros, scheduled for May 13 at 8:10 PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game by 3 or more runs. Otherwise, this market will resolve to "Houston Astros". If the game ends in a tie, this market will resolve to "Houston Astros". 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 Seattle Mariners and Houston Astros, scheduled for May 13 at 8:10 PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game by 4 or more runs. Otherwise, this market will resolve to "Houston Astros". If the game ends in a tie, this market will resolve to "Houston Astros". 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 Seattle Mariners and Houston Astros, scheduled for May 13 at 8:10 PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game by 5 or more runs. Otherwise, this market will resolve to "Houston Astros". If the game ends in a tie, this market will resolve to "Houston Astros". 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 Seattle Mariners and Houston Astros, scheduled for May 13 at 8:10 PM ET: This market will resolve to "Over" if the Seattle Mariners and Houston Astros 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 Seattle Mariners and Houston Astros, scheduled for May 13 at 8:10 PM ET: This market will resolve to "Over" if the Seattle Mariners and Houston Astros 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 Seattle Mariners and Houston Astros, scheduled for May 13 at 8:10 PM ET: This market will resolve to "Over" if the Seattle Mariners and Houston Astros 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 Seattle Mariners and Houston Astros, scheduled for May 13 at 8:10 PM ET: This market will resolve to "Over" if the Seattle Mariners and Houston Astros 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 Seattle Mariners and Houston Astros, scheduled for May 13 at 8:10 PM ET: This market will resolve to "Over" if the Seattle Mariners and Houston Astros 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 Seattle Mariners and Houston Astros, scheduled for May 13 at 8:10 PM ET: This market will resolve to "Over" if the Seattle Mariners and Houston Astros 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 Seattle Mariners and Houston Astros, scheduled for May 13 at 8:10 PM ET: This market will resolve to "Over" if the Seattle Mariners and Houston Astros combine to score 13 or more runs in this game. If the combined total is less than 13, 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 Seattle Mariners and Houston Astros, scheduled for May 13 at 8:10 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 Houston Astros. 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.Seattle Mariners carry momentum into the May 13 matchup at Houston's Daikin Park, fresh off a 10-2 rout of the Astros on May 12 where Dominic Canzone's grand slam fueled a dominant offensive outburst, improving their AL West standing at roughly 21-22 while Houston languishes at 16-27 with three straight losses. Bryce Miller returns from the injured list for Seattle, facing Lance McCullers Jr. in a pivotal pitching duel amid the Mariners' recent rotation strength from George Kirby and Bryan Woo. Astros grapple with key absences including SS Jeremy Peña's hamstring strain (out until mid-May) and RHP Hunter Brown's shoulder issue, exacerbating their 9-11 home record and bullpen woes, as both clubs vie for positioning in a tight division race.

In the upcoming MLB game between the Seattle Mariners and Houston Astros, scheduled for May 13 at 8:10PM ET:

This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game.

This market will resolve to "Houston Astros" if the Houston Astros 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
$50,280
End Date
May 21, 2026
Market Opened
May 7, 2026, 9:00 AM ET

Resolution Source

https://www.mlb.com/

Resolver

0x65070BE91...
In the upcoming MLB game between the Seattle Mariners and Houston Astros, scheduled for May 13 at 8:10PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game. This market will resolve to "Houston Astros" if the Houston Astros 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 “Astros vs. Mariners” market on Polymarket lets you trade on the outcome of the MLB game between the Houston Astros and the Seattle Mariners, scheduled for May 13, 2026 at 8:10 PM ET. The primary market is the moneyline — which team will win the game — where Mariners is currently priced at 56¢ (56% implied probability) and Astros 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 “Astros vs. Mariners” market has generated $50.3K 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 “Astros 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 HOU at 45¢ and SEA at 56¢. 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 “Astros vs. Mariners” show Seattle Mariners at 56¢ (56% implied probability) and Houston Astros 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 “Astros 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 Houston Astros

4h 26m 26s
Polymarket
Mariners
Mariners
12:10 AMMay 14
Astros
Astros
$50.28K Vol.Polymarket

Moneyline

$46.7K Vol.

Spreads

$2.3K Vol.

Totals

$2.0K Vol.

Will there be a run in the first inning?

$8 Vol.

In the upcoming MLB game between the Seattle Mariners and Houston Astros, scheduled for May 13 at 8:10PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game. This market will resolve to "Houston Astros" if the Houston Astros 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 Houston Astros, scheduled for May 13 at 8:10 PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game by 2 or more runs. Otherwise, this market will resolve to "Houston Astros". If the game ends in a tie, this market will resolve to "Houston Astros". 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 Seattle Mariners and Houston Astros, scheduled for May 13 at 8:10 PM ET: This market will resolve to "Houston Astros" if the Houston Astros win the game by 4 or more runs. Otherwise, this market will resolve to "Seattle Mariners". If the game ends in a tie, this market will resolve to "Seattle Mariners". 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 Seattle Mariners and Houston Astros, scheduled for May 13 at 8:10 PM ET: This market will resolve to "Houston Astros" if the Houston Astros win the game by 3 or more runs. Otherwise, this market will resolve to "Seattle Mariners". If the game ends in a tie, this market will resolve to "Seattle Mariners". 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 Seattle Mariners and Houston Astros, scheduled for May 13 at 8:10 PM ET: This market will resolve to "Houston Astros" if the Houston Astros win the game by 2 or more runs. Otherwise, this market will resolve to "Seattle Mariners". If the game ends in a tie, this market will resolve to "Seattle Mariners". 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 Seattle Mariners and Houston Astros, scheduled for May 13 at 8:10 PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game by 3 or more runs. Otherwise, this market will resolve to "Houston Astros". If the game ends in a tie, this market will resolve to "Houston Astros". 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 Seattle Mariners and Houston Astros, scheduled for May 13 at 8:10 PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game by 4 or more runs. Otherwise, this market will resolve to "Houston Astros". If the game ends in a tie, this market will resolve to "Houston Astros". 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 Seattle Mariners and Houston Astros, scheduled for May 13 at 8:10 PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game by 5 or more runs. Otherwise, this market will resolve to "Houston Astros". If the game ends in a tie, this market will resolve to "Houston Astros". 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 Seattle Mariners and Houston Astros, scheduled for May 13 at 8:10 PM ET: This market will resolve to "Over" if the Seattle Mariners and Houston Astros 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 Seattle Mariners and Houston Astros, scheduled for May 13 at 8:10 PM ET: This market will resolve to "Over" if the Seattle Mariners and Houston Astros 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 Seattle Mariners and Houston Astros, scheduled for May 13 at 8:10 PM ET: This market will resolve to "Over" if the Seattle Mariners and Houston Astros 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 Seattle Mariners and Houston Astros, scheduled for May 13 at 8:10 PM ET: This market will resolve to "Over" if the Seattle Mariners and Houston Astros 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 Seattle Mariners and Houston Astros, scheduled for May 13 at 8:10 PM ET: This market will resolve to "Over" if the Seattle Mariners and Houston Astros 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 Seattle Mariners and Houston Astros, scheduled for May 13 at 8:10 PM ET: This market will resolve to "Over" if the Seattle Mariners and Houston Astros 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 Seattle Mariners and Houston Astros, scheduled for May 13 at 8:10 PM ET: This market will resolve to "Over" if the Seattle Mariners and Houston Astros combine to score 13 or more runs in this game. If the combined total is less than 13, 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 Seattle Mariners and Houston Astros, scheduled for May 13 at 8:10 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 Houston Astros. 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.Seattle Mariners carry momentum into the May 13 matchup at Houston's Daikin Park, fresh off a 10-2 rout of the Astros on May 12 where Dominic Canzone's grand slam fueled a dominant offensive outburst, improving their AL West standing at roughly 21-22 while Houston languishes at 16-27 with three straight losses. Bryce Miller returns from the injured list for Seattle, facing Lance McCullers Jr. in a pivotal pitching duel amid the Mariners' recent rotation strength from George Kirby and Bryan Woo. Astros grapple with key absences including SS Jeremy Peña's hamstring strain (out until mid-May) and RHP Hunter Brown's shoulder issue, exacerbating their 9-11 home record and bullpen woes, as both clubs vie for positioning in a tight division race.

In the upcoming MLB game between the Seattle Mariners and Houston Astros, scheduled for May 13 at 8:10PM ET:

This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game.

This market will resolve to "Houston Astros" if the Houston Astros 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
$50,280
End Date
May 21, 2026
Market Opened
May 7, 2026, 9:00 AM ET

Resolution Source

https://www.mlb.com/

Resolver

0x65070BE91...
In the upcoming MLB game between the Seattle Mariners and Houston Astros, scheduled for May 13 at 8:10PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game. This market will resolve to "Houston Astros" if the Houston Astros 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 “Astros vs. Mariners” market on Polymarket lets you trade on the outcome of the MLB game between the Houston Astros and the Seattle Mariners, scheduled for May 13, 2026 at 8:10 PM ET. The primary market is the moneyline — which team will win the game — where Mariners is currently priced at 56¢ (56% implied probability) and Astros 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 “Astros vs. Mariners” market has generated $50.3K 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 “Astros 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 HOU at 45¢ and SEA at 56¢. 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 “Astros vs. Mariners” show Seattle Mariners at 56¢ (56% implied probability) and Houston Astros 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 “Astros 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.