• The Red Sox are -140 favorites vs the Mariners
• Mariners vs Red Sox Over / Under today: 8.5 Runs
• Mariners / Red Sox TV Channel: NESN | MRTV

The Seattle Mariners (+115) visit Fenway Park to take on the Boston Red Sox (-140) on September 2, 2026. First pitch is scheduled for 4:10 pm in Boston, MA.

This season, the Mariners are against the spread (ATS), while the Red Sox are ATS.

Mariners vs Red Sox Starting Pitchers Today:

• Mariners starting pitcher: Bryce Miller 4-8, 4.14 ERA
• Red Sox starting pitcher: Patrick Sandoval 1-3, 4.24 ERA

Mariners vs. Red Sox Odds, Run Line, Over/Under & Moneyline

Mariners vs Red Sox Prediction for Today’s Game

Based on recent trends the model predicts the Red Sox will win Wednesday‘s MLB game with 57.4% confidence, factoring in game simulations, recent player performances, starting pitchers and injuries.

Bet now on Mariners vs Red Sox and all games with BetMGM

We’ve highlighted some favorite MLB player prop bets for Mariners players for Wednesday‘s game, looking at profitable historical betting trends:

Best Mariners Player Prop Bets Today:

• Randy Arozarena has hit the Home Runs Over in 4 of his last 10 games (+15.40 Units / 154% ROI)
• Cal Raleigh has hit the Runs Under in 20 of his last 25 away games (+11.35 Units / 27% ROI)
• Taylor Ward has hit the Total Bases Under in 17 of his last 25 games (+11.05 Units / 37% ROI)
• Cal Raleigh has hit the Hits Runs and RBIs Under in 19 of his last 25 away games (+11.00 Units / 32% ROI)
• J.P. Crawford has hit the Walks Under in 20 of his last 25 away games (+10.90 Units / 25% ROI)

And here are some favorite MLB player prop bets for Red Sox players for Wednesday‘s game, looking at profitable historical betting trends:

Best Red Sox Player Prop Best Bets Today:

• Mickey Gasper has hit the Home Runs Over in 5 of his last 7 games at home (+35.20 Units / 503% ROI)
• Mickey Gasper has hit the Hits Over in 17 of his last 20 games at home (+10.95 Units / 29% ROI)
• Adley Rutschman has hit the Walks Over in 14 of his last 25 games at home (+10.85 Units / 43% ROI)
• Mickey Gasper has hit the Total Bases Over in 14 of his last 20 games at home (+10.30 Units / 41% ROI)
• Ceddanne Rafaela has hit the Runs Under in his last 10 games (+10.00 Units / 59% ROI)

Mariners Best Bets Today:

• The Seattle Mariners have hit the Game Total Over in 31 of their last 50 away games (+12.75 Units / 23% ROI)
• The Seattle Mariners have hit the Team Total Under in 22 of their last 35 away games (+8.10 Units / 20% ROI)
• The Seattle Mariners have hit the 1st Five Innings (F5) Team Total Over in 12 of their last 17 games (+6.60 Units / 32% ROI)
• The Seattle Mariners have covered the 1st Five Innings (F5) Run Line in 8 of their last 14 away games (+0.85 Units / 5% ROI)
• The Seattle Mariners have hit the 1st Five Innings (F5) Moneyline in 9 of their last 18 games (+0.80 Units / 4% ROI)

Red Sox Best Bets Today:

• The Boston Red Sox have hit the 1st Five Innings (F5) Team Total Over in 30 of their last 45 games at home (+14.45 Units / 27% ROI)
• The Boston Red Sox have hit the Team Total Over in 22 of their last 30 games at home (+13.40 Units / 38% ROI)
• The Boston Red Sox have hit the Moneyline in 34 of their last 50 games (+12.85 Units / 18% ROI)
• The Boston Red Sox have covered the 1st Five Innings (F5) Run Line in 20 of their last 30 games at home (+9.55 Units / 28% ROI)
• The Boston Red Sox have hit the Game Total Over in 10 of their last 12 games at home (+7.90 Units / 60% ROI)

Mariners Against the Spread (ATS) Record

Against the spread this season, the Mariners are against the Run Line ( Units / ROI).

• away moneyline record when betting on the Moneyline for ML units Units / ML ROI ROI
• away total over record when betting on the total runs Over for over units Units / over ROI ROI
• away total under record when betting on the total runs Under for under units Units / under ROI ROI

Red Sox Against the Spread (ATS) Record

Against the spread this season, the Red Sox are against the Run Line ( Units / ROI).

• home moneyline record when betting on the Moneyline for ML units Units / ML ROI ROI
• home total over record when betting on the total runs Over for over units Units / over ROI ROI
• home total under record when betting on the total runs Under for under units Units / under ROI ROI

Red Sox vs Mariners Home Run Prop Bets Today

Red Sox vs Mariners Total Hits Prop Bets Today

Red Sox vs Mariners Strikeout Prop Bets Today

Mariners Keys to the Game vs. the Red Sox

The Mariners are just 2-63 (.031) when trailing entering the 8th inning this season — 3rd lowest in MLB.

The Mariners are just 20-23 (.465) when they’ve scored in the first inning this season — 2nd lowest in MLB.

The Mariners are 9-4 (.692) when tied entering the 8th inning this season — 2nd best in MLB.

The Mariners are just 22-34 (.393) vs bottom 10 scoring offenses this season Today, they face the Red Sox (16th in runs scored).

Red Sox Keys to the Game vs. the Mariners

The Red Sox are 44-31 (.587) after a win this season — 3rd best in MLB.

The Red Sox are 63-2 (.969) when leading entering the 8th inning this season — 3rd best in MLB.

The Red Sox are 11-52 (.175) when trailing entering the 7th inning this season — 4th best in MLB.

The Red Sox are 55-5 (.917) when leading entering the 7th inning this season — 5th best in MLB.

Mariners Hitting Stats & Trends

Mariners hitters are slugging just .477 on the first pitch of at-bats this season — lowest in MLB.

The Mariners are batting just .228 this season — tied for lowest in MLB.

The Mariners are batting just .213 against LHP this season — lowest in MLB.

The Mariners are batting just .302 on the first pitch of at-bats this season — 3rd lowest in MLB.

Red Sox Hitting Stats & Trends

The Red Sox are batting .285 in lefty-lefty matchups this season — best in MLB.

The Red Sox are batting .180 with two-strikes this season — 3rd best in MLB.

Red Sox hitters have an OPS of .535 (2,755 PA’s) with two-strikes this season — 5th best in MLB.

29% of Red Sox hitters strikeouts have come on 95+ MPH fastballs this season — highest in MLB.

Mariners Pitching Stats & Trends

Mariners pitchers have a first-pitch strike rate of 66% this season — highest in MLB.

Mariners pitchers have walked 7% of batters this season — 2nd best in MLB.

Mariners pitchers have thrown at least two strikes in their first three pitches to 69% of opposing batters this season — highest in MLB.

Opponents have a swing rate of 51% against the Mariners pitchers this season — highest in MLB.

Red Sox Pitching Stats & Trends

Red Sox pitchers have walked 6% of batters when facing the leadoff batter in the inning this season — 3rd best in MLB.

Red Sox pitchers have walked 8% of batters this season — 3rd best in MLB.

Red Sox pitchers have allowed a run just 24% of the time after their offense scores this season — lowest in MLB.

Red Sox pitchers have an ERA of 3.55 (615.1 IP) on the road this season — 2nd best in MLB.

More MLB Reading:

• Home Run Predictions Today
• Best NRFI Bets Today
• Strikeout Props Today
• MLB Starting Pitchers Today

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