About This Market
Seattle Mariners vs.
Seattle Mariners vs. Boston Red Sox (6:45 PM ET): MLB game held on 2026-08-31. Review the historical prediction market odds from Kalshi, Polymarket, and more on Prediction Hunt.
Live prediction market odds for Seattle Mariners vs. Boston Red Sox (6:45 PM ET). Compare prices across Kalshi and Polymarket US and Polymarket and ProphetX.
MLB·Resolved 2026-08-31
This market resolved on 2026-08-31. Boston Red Sox was the officially declared outcome. Prior to resolution, the market peaked at 93%.
Seattle Mariners vs.
Seattle Mariners vs. Boston Red Sox (6:45 PM ET): MLB game held on 2026-08-31. Review the historical prediction market odds from Kalshi, Polymarket, and more on Prediction Hunt.
| Candidate | ![]() | ![]() | ![]() | |
|---|---|---|---|---|
Cal Raleigh Over 0.5 Hits | 99% | — | — | — |
Cal Raleigh Over 0.5 RBIs | 99% | — | — | — |
Cal Raleigh Over 2.5 Hits + Runs + RBIs | 99% | — | — | — |
Caleb Durbin Over 0.5 Hits + Runs + RBIs | 99% | — | — | — |
Ceddanne Rafaela Over 0.5 Hits | 99% | — | — | — |
Ceddanne Rafaela Over 0.5 Hits + Runs + RBIs | 99% | — | — | — |
Ceddanne Rafaela Over 0.5 RBIs | 99% | — | — | — |
Ceddanne Rafaela Over 1.5 Hits | 99% | — | — | — |
Ceddanne Rafaela Over 1.5 RBIs | 99% | — | — | — |
Ceddanne Rafaela Over 2.5 Hits + Runs + RBIs | 99% | — | — | — |
Ceddanne Rafaela Over 3.5 Hits + Runs + RBIs | 99% | — | — | — |
Ceddanne Rafaela Over 4.5 Hits + Runs + RBIs | 99% | — | — | — |
Cole Young Over 0.5 Hits + Runs + RBIs | 99% | — | — | — |
J.P. Crawford Under 0.5 Home Runs | — | — | — | 99% |
Julio Rodriguez Over 0.5 Hits | 99% | — | — | — |
Julio Rodriguez Over 0.5 Hits + Runs + RBIs | 99% | — | — | — |
Julio Rodriguez Over 0.5 RBIs | 99% | — | — | — |
Payton Tolle Over 3.5 Strikeouts | 99% | — | — | — |
Randy Arozarena Over 0.5 Hits | 99% | — | — | — |
Randy Arozarena Over 0.5 Hits + Runs + RBIs | 99% | — | — | — |
Randy Arozarena Over 1.5 Hits | 99% | — | — | — |
Randy Arozarena Over 2.5 Hits | 99% | — | — | — |
Randy Arozarena Over 2.5 Hits + Runs + RBIs | 99% | — | — | — |
Randy Arozarena Over 3.5 Hits + Runs + RBIs | 99% | — | — | — |
Randy Arozarena Over 4.5 Hits + Runs + RBIs | 99% | — | — | — |
Roman Anthony Over 0.5 Hits | 99% | — | — | — |
Roman Anthony Over 0.5 Hits + Runs + RBIs | 99% | — | — | — |
Roman Anthony Over 1.5 Hits | 99% | — | — | — |
Roman Anthony Over 3.5 Hits + Runs + RBIs | 99% | — | — | — |
Cal Raleigh Under 0.5 Home Runs | — | — | — | 99% |
Trevor Story Under 0.5 Home Runs | — | — | — | 99% |
Weston Wilson Under 0.5 Home Runs | — | — | — | 99% |
Josh Naylor Under 0.5 Home Runs | — | — | 95% | 99% |
Adley Rutschman Under 0.5 Home Runs | — | — | 97% | 93% |
Wilyer Abreu Under 0.5 Home Runs | — | — | 88% | 99% |
Dominic Canzone Under 0.5 Home Runs | — | — | 92% | 99% |
Taylor Ward Under 0.5 Home Runs | — | — | 92% | 99% |
Willson Contreras Under 0.5 Home Runs | — | — | — | 91% |
Jarren Duran Under 0.5 Home Runs | — | — | — | 91% |
Randy Arozarena Under 0.5 Home Runs | — | — | 0% | 86% |
Nick Sogard Under 0.5 Home Runs | — | — | 80% | 99% |
Caleb Durbin Under 0.5 Home Runs | — | — | 80% | 99% |
Ceddanne Rafaela Under 0.5 Home Runs | — | — | 80% | 99% |
Julio Rodriguez Under 0.5 Home Runs | — | — | 80% | 99% |
Seattle Mariners spread plus 2.5 | — | — | 71% | 87% |
Seattle Mariners spread plus 1.5 | — | — | 64% | 94% |
Boston Red Sox spread plus 1.5 | — | — | 71% | 81% |
Boston Red SoxWINNER | 99% | 100% | 57% | 87% |
Cal Raleigh Under 1.5 Hits + Runs + RBIs | — | — | — | 70% |
Total over 8.5 | 99% | — | 59% | 79% |
George Kirby Under 4.5 Strikeouts | — | — | 81% | 50% |
Total over 7.5 | 99% | — | 60% | 71% |
Taylor Ward Under 1.5 Hits + Runs + RBIs | — | — | — | 65% |
Cal Raleigh Over 0.5 Hits + Runs + RBIs | 99% | — | — | 64% |
Willson Contreras Over 0.5 Hits | 63% | — | — | — |
Payton Tolle Over 5.5 Strikeouts | 99% | — | 62% | — |
Andruw Monasterio Under 1.5 Hits + Runs + RBIs | — | — | — | 61% |
J.P. Crawford Over 0.5 Hits + Runs + RBIs | — | — | — | 61% |
George Kirby Over 3.5 Strikeouts | 1% | — | 61% | — |
Payton Tolle Over 4.5 Strikeouts | 99% | — | 61% | — |
Josh Naylor Under 1.5 Hits + Runs + RBIs | — | — | — | 60% |
Trevor Story Under 1.5 Hits + Runs + RBIs | — | — | — | 60% |
Willson Contreras Under 1.5 Hits + Runs + RBIs | — | — | — | 60% |
Julio Rodriguez Under 1.5 Hits + Runs + RBIs | — | — | — | 60% |
Total over 9.5 | 99% | — | 43% | 74% |
Dominic Canzone Under 1.5 Hits + Runs + RBIs | — | — | — | 58% |
Roman Anthony Over 1.5 Hits + Runs + RBIs | 99% | — | — | 58% |
Weston Wilson Over 0.5 Hits + Runs + RBIs | — | — | — | 58% |
Boston Red Sox spread plus 2.5 | — | — | 81% | 34% |
Wilyer Abreu Over 1.5 Hits + Runs + RBIs | 56% | — | — | 57% |
Randy Arozarena Under 1.5 Hits + Runs + RBIs | — | — | — | 57% |
Adley Rutschman Over 1.5 Hits + Runs + RBIs | — | — | — | 56% |
Ceddanne Rafaela Over 1.5 Hits + Runs + RBIs | 99% | — | — | 56% |
Caleb Durbin Under 1.5 Hits + Runs + RBIs | — | — | — | 56% |
Total over 8.0 | — | — | — | 55% |
Nick Sogard Under 1.5 Hits + Runs + RBIs | — | — | — | 54% |
Payton Tolle Under 6.5 Strikeouts | — | — | 1% | 54% |
Weston Wilson Under 0.5 Hits + Runs + RBIs | — | — | — | 53% |
Jarren Duran Under 1.5 Hits + Runs + RBIs | — | — | — | 53% |
George Kirby Over 4.5 Strikeouts | 1% | — | 99% | 52% |
Caleb Durbin Over 1.5 Hits + Runs + RBIs | 99% | — | — | 52% |
Jarren Duran Over 1.5 Hits + Runs + RBIs | — | — | — | 52% |
Adley Rutschman Under 1.5 Hits + Runs + RBIs | — | — | — | 51% |
Total under 8.0 | — | — | — | 51% |
Wilyer Abreu Under 1.5 Hits + Runs + RBIs | — | — | — | 51% |
Willson Contreras Over 1.5 Hits + Runs + RBIs | 49% | — | — | 51% |
Nick Sogard Over 1.5 Hits + Runs + RBIs | — | — | — | 50% |
Ceddanne Rafaela Under 1.5 Hits + Runs + RBIs | — | — | — | 49% |
Andruw Monasterio Over 1.5 Hits + Runs + RBIs | — | — | — | 49% |
Randy Arozarena Over 1.5 Hits + Runs + RBIs | 99% | — | — | 48% |
Julio Rodriguez Over 1.5 Hits + Runs + RBIs | 99% | — | — | 48% |
Cal Raleigh Over 1.5 Home Runs | 48% | — | — | — |
Josh Naylor Over 1.5 Hits + Runs + RBIs | — | — | — | 48% |
J.P. Crawford Under 0.5 Hits + Runs + RBIs | — | — | — | 47% |
Dominic Canzone Over 1.5 Hits + Runs + RBIs | — | — | — | 46% |
Trevor Story Over 1.5 Hits + Runs + RBIs | — | — | — | 46% |
Seattle Mariners spread minus 2.5 | 1% | — | 19% | 70% |
Total under 9.5 | — | — | 57% | 31% |
Cole Young Over 1.5 Hits + Runs + RBIs | 99% | — | — | 44% |
Roman Anthony Over 2.5 Hits + Runs + RBIs | 99% | — | — | 44% |
George Kirby Over 2.5 Strikeouts | 1% | — | 44% | — |
Taylor Ward Over 1.5 Hits + Runs + RBIs | — | — | — | 42% |
Cal Raleigh Over 1.5 Hits + Runs + RBIs | 99% | — | — | 42% |
Cal Raleigh Under 0.5 Hits + Runs + RBIs | — | — | — | 40% |
Caleb Durbin Over 1.5 Hits | 37% | — | — | — |
Wilyer Abreu Over 2.5 Hits + Runs + RBIs | 37% | — | — | — |
Total under 7.5 | — | — | 40% | 32% |
Roman Anthony Over 0.5 RBIs | 35% | — | — | — |
Willson Contreras Over 0.5 RBIs | 35% | — | — | — |
Payton Tolle Over 6.5 Strikeouts | 1% | — | 19% | 50% |
Total under 8.5 | — | — | 41% | 26% |
Julio Rodriguez Over 2.5 Hits + Runs + RBIs | 31% | — | — | — |
Wilyer Abreu Over 2.5 Hits | 31% | — | — | — |
Boston Red Sox spread minus 1.5 | 1% | — | 36% | 25% |
Caleb Durbin Over 0.5 RBIs | 30% | — | — | — |
Caleb Durbin Over 2.5 Hits + Runs + RBIs | 30% | — | — | — |
Caleb Durbin Over 0.5 Hits | 27% | — | — | — |
Seattle Mariners | 1% | 1% | 38% | 15% |
Cole Young Over 0.5 RBIs | 26% | — | — | — |
Seattle Mariners spread minus 1.5 | 1% | — | 0% | 23% |
Boston Red Sox spread minus 2.5 | 1% | — | 29% | 16% |
Cole Young Over 1.5 Hits | 22% | — | — | — |
Willson Contreras Over 1.5 Hits | 22% | — | — | — |
Julio Rodriguez Over 1.5 Hits | 21% | — | — | — |
Ceddanne Rafaela Over 1.5 Home Runs | 1% | — | 20% | — |
Julio Rodriguez Over 1.5 Home Runs | 1% | — | 20% | — |
Caleb Durbin Over 1.5 Home Runs | 1% | — | 20% | — |
Cal Raleigh Over 1.5 Hits | 19% | — | — | — |
Cole Young Over 0.5 Hits | 19% | — | — | — |
Payton Tolle Over 7.5 Strikeouts | 3% | — | 99% | 34% |
Willson Contreras Over 3.5 Hits + Runs + RBIs | 18% | — | — | — |
Julio Rodriguez Over 2.5 Hits | 17% | — | — | — |
Wilyer Abreu Over 1.5 RBIs | 17% | — | — | — |
Cal Raleigh Over 3.5 Hits + Runs + RBIs | 16% | — | — | — |
Willson Contreras Over 0.5 Home Runs | 15% | — | — | 17% |
Nick Sogard Over 0.5 Home Runs | — | — | 20% | 9% |
Randy Arozarena Over 0.5 Home Runs | 99% | — | 100% | 14% |
Ceddanne Rafaela Over 0.5 Home Runs | 1% | — | 20% | 8% |
Julio Rodriguez Over 1.5 RBIs | 14% | — | — | — |
Josh Naylor Over 0.5 Home Runs | — | — | 20% | 8% |
Willson Contreras Over 1.5 RBIs | 13% | — | — | — |
Wilyer Abreu Over 4.5 Hits + Runs + RBIs | 13% | — | — | — |
Caleb Durbin Over 0.5 Home Runs | 1% | — | 20% | 4% |
Cal Raleigh Over 1.5 RBIs | 12% | — | — | — |
Randy Arozarena Over 1.5 Home Runs | 4% | — | 20% | — |
Roman Anthony Over 4.5 Hits + Runs + RBIs | 12% | — | — | — |
Cal Raleigh Over 0.5 Home Runs | 99% | — | — | 12% |
Wilyer Abreu Over 0.5 Home Runs | 1% | — | 17% | 5% |
Jarren Duran Over 0.5 Home Runs | — | — | — | 11% |
Weston Wilson Over 0.5 Home Runs | — | — | — | 10% |
George Kirby Over 6.5 Strikeouts | 3% | — | 17% | — |
Roman Anthony Over 1.5 RBIs | 10% | — | — | — |
Cal Raleigh Over 4.5 Hits + Runs + RBIs | 9% | — | — | — |
Cole Young Over 1.5 RBIs | 9% | — | — | — |
Julio Rodriguez Over 0.5 Home Runs | 4% | — | 20% | 9% |
Trevor Story Over 0.5 Home Runs | — | — | — | 9% |
Dominic Canzone Over 0.5 Home Runs | — | — | 8% | 10% |
Cole Young Over 0.5 Home Runs | 2% | — | 20% | 8% |
Caleb Durbin Over 1.5 RBIs | 8% | — | — | — |
Taylor Ward Over 0.5 Home Runs | — | — | 9% | 6% |
Roman Anthony Over 2.5 Hits | 7% | — | — | — |
Adley Rutschman Over 0.5 Home Runs | — | — | 3% | 10% |
Wilyer Abreu Over 2.5 RBIs | 6% | — | — | — |
George Kirby Over 7.5 Strikeouts | 5% | — | 7% | — |
Roman Anthony Over 0.5 Home Runs | 3% | — | — | 7% |
Caleb Durbin Over 2.5 Hits | 5% | — | — | — |
George Kirby Over 8.5 Strikeouts | 5% | — | — | — |
Willson Contreras Over 2.5 Hits | 5% | — | — | — |
J.P. Crawford Over 0.5 Home Runs | — | — | — | 5% |
Cole Young Over 2.5 Hits | 4% | — | — | — |
George Kirby Over 5.5 Strikeouts | 3% | — | — | — |
Payton Tolle Over 10.5 Strikeouts | 3% | — | — | — |
Payton Tolle Over 8.5 Strikeouts | 3% | — | — | — |
Willson Contreras Over 2.5 RBIs | 3% | — | — | — |
Ceddanne Rafaela Over 3.5 Hits | 2% | — | — | — |
Roman Anthony Over 3.5 Hits | 2% | — | — | — |
Willson Contreras Over 1.5 Home Runs | 2% | — | — | — |
Wilyer Abreu Over 0.5 RBIs | 2% | — | — | — |
Wilyer Abreu Over 1.5 Hits | 2% | — | — | — |
Wilyer Abreu Over 1.5 Home Runs | 2% | — | 1% | — |
Wilyer Abreu Over 3.5 Hits | 2% | — | — | — |
Cal Raleigh Over 2.5 Hits | 1% | — | — | — |
Ceddanne Rafaela Over 2.5 Hits | 1% | — | — | — |
George Kirby Over 17.5 Pitcher Outs | 1% | — | — | — |
Payton Tolle Over 17.5 Pitcher Outs | 1% | — | — | — |
Payton Tolle Over 9.5 Strikeouts | 1% | — | — | — |
Roman Anthony Over 1.5 Home Runs | 1% | — | — | — |
Wilyer Abreu Over 0.5 Hits | 1% | — | — | — |
Wilyer Abreu Over 0.5 Hits + Runs + RBIs | 1% | — | — | — |
Caleb Durbin Over 3.5 Hits + Runs + RBIs | 0% | — | — | — |
Caleb Durbin Over 4.5 Hits + Runs + RBIs | 0% | — | — | — |
Cole Young Over 2.5 Hits + Runs + RBIs | 0% | — | — | — |
Cole Young Over 3.5 Hits + Runs + RBIs | 0% | — | — | — |
Cole Young Over 4.5 Hits + Runs + RBIs | 0% | — | — | — |
Julio Rodriguez Over 3.5 Hits + Runs + RBIs | 0% | — | — | — |
Julio Rodriguez Over 4.5 Hits + Runs + RBIs | 0% | — | — | — |
Willson Contreras Over 0.5 Hits + Runs + RBIs | 0% | — | — | — |
Willson Contreras Over 2.5 Hits + Runs + RBIs | 0% | — | — | — |
Willson Contreras Over 4.5 Hits + Runs + RBIs | 0% | — | — | — |
Wilyer Abreu Over 3.5 Hits + Runs + RBIs | 0% | — | — | — |
Boston Red Sox
85.6% avg
Official settlement criteria, resolution sources, and edge cases across Kalshi and Polymarket and Polymarket US and ProphetX.
KalshiIf Boston wins the Seattle vs Boston professional baseball game originally scheduled for Aug 31, 2026 at 6:45 PM EDT, then the market resolves to Yes.
The following market refers to the Seattle vs Boston professional baseball game originally scheduled for Aug 31, 2026 at 6:45 PM EDT. If this game is postponed or delayed, the market will remain open and close after the rescheduled game has finished (within two days). If the game is cancelled or rescheduled to over two days away, the market will resolve to a fair price in accordance with the rules. Kalshi is not affiliated, associated, authorized, endorsed by, or in any way officially connected with the Governing League. All trademarks, logos, and brand names are the property of their respective owners.
PolymarketIn the upcoming MLB game between the Seattle Mariners and Boston Red Sox, scheduled for August 31 at 6:45PM ET: This market will resolve to "Seattle Mariners" if the Seattle Mariners win the game. This market will resolve to "Boston Red Sox" if the Boston Red Sox 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.
Polymarket USThis market will settle to the winner of the Seattle Mariners vs Boston Red Sox MLB game scheduled for 2026-08-31 at 6:45PM ET. Extra innings are included if played. If the game is delayed, postponed, or suspended and not rescheduled to a date within two weeks of the originally scheduled date, the market will settle to the last fair market price. Outcome sourced from MLB.
Sports moneyline - resolves based on official game outcome per ProphetX Prediction Rules
The outcomes listed above show how traders are pricing this question. Compare outcome prices from Kalshi, Polymarket US, Polymarket, ProphetX in one place. Each price reflects the market’s implied probability, not a guaranteed result. This event is archived; prices shown are historical.
The last available prices are Boston Red Sox: 99.0¢ on Kalshi, 57.0¢ on Polymarket, 86.9¢ on ProphetX, 99.5¢ on Polymarket US; Seattle Mariners: 1.0¢ on Kalshi, 38.0¢ on Polymarket, 15.4¢ on ProphetX, 0.5¢ on Polymarket US. Prices are quoted in cents per $1 share. Check the venue for executable prices and available liquidity. The last available price is not necessarily the final settlement price.
The largest price difference shown across venues is 42.5 percentage points. Venues have different traders, liquidity and fees, so their prices can differ. A price gap alone does not establish an executable arbitrage opportunity; compare settlement rules and the actual buy and sell prices.
For example, Boston Red Sox at 85.6¢ implies about a 85.6% chance. For a standard $1 contract, a share pays $1 if its outcome settles as correct and $0 if it settles as incorrect. A winning share bought at 40¢ earns 60¢ before fees. Check each venue’s settlement rules, fees and eligibility before trading. Historical prices alone do not identify the winning outcome.