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Seattle Mariners vs Boston Red Sox — 2026-08-31

6:45 PM ETFenway ParkSP: George Kirby vs Payton TolleMLBFINAL
Recap

Boston Red Sox won 9-8 over Seattle Mariners on 2026-08-31. Our pre-game pick hit. Margin of 1 run.

Model prediction (pre-game)

Seattle Mariners
48%
Boston Red Sox
52%
Projected
Mariners 4.5 - 4.4 Sox

What our model sees

Our MLB model rates Boston Red Sox as the more likely winner at 52%. The driver is a -9-point Elo gap (1482 vs 1491) reflecting roster strength, recent results, and quality-of-opposition adjustments. Seattle Mariners would need above-baseline variance to flip the script. This page auto-updates with the final score and our recap once the game ends.

Recent form (last 10)

Seattle Mariners
No recent games on file.
Boston Red Sox
No recent games on file.

What we said before the game

Pre-game model: Seattle Mariners 48% / Boston Red Sox 52%. Projected Seattle Mariners 4.5 — 4.4 Boston Red Sox.

Our MLB model rates Boston Red Sox as the more likely winner at 52%. The driver is a -9-point Elo gap (1482 vs 1491) reflecting roster strength, recent results, and quality-of-opposition adjustments. Seattle Mariners would need above-baseline variance to flip the script. This page auto-updates with the final score and our recap once the game ends.

Our model said X. Here's what happened.

Pre-game call: Boston Red Sox ML at -164 at -164. Pre-game: model 64.4% vs market 60.9% implied, a +3.5pp edge.

What happened: Seattle Mariners 8 @ Boston Red Sox 9.

Bet returned +0.91u on 1.5u risked.

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