Sports

Houston Astros vs. Seattle Mariners Odds Compared

In the upcoming MLB game between the Houston Astros and Seattle Mariners, scheduled for September 23 at 10:10PM ET: This market will resolve to "Houston Astros" if the Houston Astros win the game. This market will resolve to "Seattle Mariners" if the Seattle Mariners 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.

3 platforms $765.3K total volume Resolves October 1, 2026 Quoted 3d ago
Frontrunner — 7 day trend
Seattle Mariners
100%

Cross-Platform Price Comparison

1.6pt spread ≥ 1pt
Outcome KalshiNovigPolymarket Spread
Houston Astros1%41%0%40.7pt
Seattle Mariners99%59%100%40.7pt

Prices shown as implied probability (%). Spread is the largest gap between platforms for that outcome — a wider spread means the platforms disagree more about the likely result. A spread of 1+ point is stamped.

Resolution criteria
In the upcoming MLB game between the Houston Astros and Seattle Mariners, scheduled for September 23 at 10:10PM ET: This market will resolve to "Houston Astros" if the Houston Astros win the game. This market will resolve to "Seattle Mariners" if the Seattle Mariners 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

How many platforms track "Houston Astros vs. Seattle Mariners"?
3 platforms currently quote this market: Kalshi, Novig, Polymarket. Odds Reference aggregates live prices from each and shows them side by side.
What is the current frontrunner for "Houston Astros vs. Seattle Mariners"?
"Seattle Mariners" is the current frontrunner at an implied probability of 100%, based on the latest prices across tracked platforms.
Do platforms disagree on the price for "Houston Astros vs. Seattle Mariners"?
Yes — the largest current disagreement is on "Seattle Mariners", where prices differ by 40.7 percentage points across platforms.
When does "Houston Astros vs. Seattle Mariners" resolve?
This market is scheduled to resolve on October 1, 2026.

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