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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.

Browse historical results
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Claim offerLegal in USAVerified Sep 14, 2026

MARKET RESOLVEDKalshi / Polymarket US / Polymarket / ProphetX

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Boston Red Sox Wins: Seattle Mariners vs. Boston Red Sox (6:45 PM ET)

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%.

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.

Price History

Multi-Platform Probabilities
Loading 30D data…

Final Closing Odds

4 platforms
Candidate
Kalshi
Polymarket US
Polymarket
ProphetX
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%———

Resolution Oracles

KalshiKalshi
Kalshi Rules
PolymarketPolymarket
UMA Optimistic OracleConsensus of Sources
ProphetXProphetX
ProphetX Rules
Read Full Market Rulebooks
Stats
Spread42.5%
Platforms4
Candidates2
Winner

Boston Red Sox

85.6% avg

Market RulebooksOfficial settlement criteria and edge cases

Market Rulebook: Seattle Mariners vs. Boston Red Sox (6:45 PM ET)

Official settlement criteria, resolution sources, and edge cases across Kalshi and Polymarket and Polymarket US and ProphetX.

KalshiKalshi
Primary Rule

If 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.

Edge Cases

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.

Resolution Oracles
Kalshi Rules
PolymarketPolymarket
Primary Rule

In 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.

Resolution Oracles
UMA Optimistic OracleConsensus of Sources
Polymarket USPolymarket US
Primary Rule

This 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.

ProphetXProphetX
Primary Rule

Sports moneyline - resolves based on official game outcome per ProphetX Prediction Rules

Resolution Oracles
ProphetX Rules

Frequently Asked Questions

What does the Seattle Mariners vs. Boston Red Sox (6:45 PM ET) prediction market track?

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.

What were the last available Seattle Mariners vs. Boston Red Sox (6:45 PM ET) odds?

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.

Why do Seattle Mariners vs. Boston Red Sox (6:45 PM ET) odds vary across prediction markets?

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.

How do Seattle Mariners vs. Boston Red Sox (6:45 PM ET) prediction market payouts work?

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.

Learn more:How to Read Prediction Market PricesCompare Fees Before You TradeNew to Polymarket?

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