Seattle Mariners
65-74 · 3rd in AL West, 5 GB
Bats heating upRHP Bryce Miller · High-strikeout arm · plus control
@
Boston Red Sox
75-64 · 3rd in AL East, 8.5 GB
Steady at the plateLHP Patrick Sandoval · Balanced starter
Team Identity
Seattle Mariners
Season-to-date, 139 games, 5,359 PA.
A below-league-average offense across most categories this season. The bats have been heating up lately.
PowerWell Below24
ContactWell Below14
Plate DisciplineAverage46
SpeedAverage48
RISPWell Below14
Recent FormTrending Up
Total bases per PA is up 7% over the team's last 10 games versus its season baseline.
Boston Red Sox
Season-to-date, 139 games, 5,491 PA.
A contact-oriented offense that puts the ball in play and avoids empty at-bats.
PowerAverage56
ContactAbove Avg70
Plate DisciplineBelow Avg34
SpeedAverage47
RISPBelow Avg42
Recent FormHolding Steady
Recent underlying offense is roughly in line with its season baseline.
What This Game Is About
Biggest Advantage
Red Sox's offense is defined by being contact-oriented, and this game tests whether Mariners can match it.
Swing Factor
Patrick Sandoval strikes hitters out at a 22.2% clip (57th percentile); Mariners carry a 22.6% strikeout rate.
Momentum
Mariners are trending up and Red Sox are holding steady over their last 10 games.
Key Matchups
Can Patrick Sandoval miss enough bats?
Patrick Sandoval strikes hitters out at a 22.2% clip (57th percentile); Mariners carry a 22.6% strikeout rate.
Edge · MarinersPatrick Sandoval: 22.2% K rateMariners: 22.6% K rateModerate confidence
Can Bryce Miller miss enough bats?
Bryce Miller strikes hitters out at a 24.0% clip (70th percentile); Red Sox carry a 20.4% strikeout rate.
Edge · Red SoxBryce Miller: 24.0% K rateRed Sox: 20.4% K rateHigh confidence
How do Mariners handle left-handers?
Mariners have produced worse against left-handers this season (0.289 vs. 0.322 TB/PA overall).
Edge · Patrick Sandovalvs left-handers: 0.289 TB/PA (1701 PA)overall: 0.322 TB/PAModerate confidence
Can Bryce Miller limit Red Sox's power?
Red Sox rank in the 56th percentile in extra-base production, while Bryce Miller sits in the 26th percentile at suppressing total bases.
Edge · Red SoxRed Sox: 0.345 TB/PABryce Miller: 0.379 TB/PA allowed (383 PA)High confidence
Can Bryce Miller command the strike zone?
Red Sox walk in 8.1% of trips; Bryce Miller allows walks sparingly (6.5%).
Edge · Bryce MillerRed Sox: 8.1% walk rateBryce Miller: 6.5% walks allowedHigh confidence
Pitcher Trends
Bryce Miller
Seattle Mariners · 8 starts
Strikeouts3.8/start
Hits allowed5.9/start
5 or fewer Strikeouts — 6 of last 65 or fewer Hits Allowed — 3 of last 6
24% K ratePer-start form only — opponent lineup, park, and pitch count aren't modeled.
Patrick Sandoval
Boston Red Sox · 8 starts
Strikeouts5.4/start
Hits allowed6.2/start
6+ Strikeouts — 4 of last 65 or fewer Hits Allowed — 3 of last 6
22% K ratePer-start form only — opponent lineup, park, and pitch count aren't modeled.
Player Trends
Mickey Gasper
Boston Red Sox · 0.286 hit rate · 0.786 TB/PA
recent games · 1+ hit
L53 / 5L107 / 10L2514 / 253-game hit streak
Total bases per PA is up 132% over his prior baseline, with hits in 6 of his last 8 games. He has trimmed his strikeout rate to 7%.
Cal Raleigh
Seattle Mariners · 0.262 hit rate · 0.738 TB/PA
recent games · 1+ hit
L54 / 5L108 / 10L2513 / 254-game hit streak
Total bases per PA is up 192% over his prior baseline, with hits in 8 of his last 10 games.
Randy Arozarena
Seattle Mariners · 0.244 hit rate · 0.600 TB/PA
recent games · 1+ hit
L53 / 5L106 / 10L2515 / 252-game hit streak
Total bases per PA is up 61% over his prior baseline, with hits in 6 of his last 10 games.
Willson Contreras
Boston Red Sox · 0.100 hit rate · 0.167 TB/PA
recent games · 1+ hit
L52 / 5L105 / 10L2514 / 25
Total bases per PA is down 61% over his prior baseline, with hits in 2 of his last 7 games.
Julio Rodriguez
Seattle Mariners · 0.140 hit rate · 0.256 TB/PA
recent games · 1+ hit
L53 / 5L105 / 10L2516 / 252-game hit streak
On-base rate is down 47% over his prior baseline, with hits in 5 of his last 10 games. His strikeout rate has climbed to 40%.
Players Positioned to Succeed
77
Randy Arozarena
1+ Hit
Seattle Mariners
Why it stands out
Batting 1st, confirmed lineup
No notable risk
74
Ceddanne Rafaela
1+ Hit
Boston Red Sox
Why it stands out
Batting 3rd, confirmed lineup
No notable risk
72
Roman Anthony
1+ Hit
Boston Red Sox
Why it stands out
Batting 1st, confirmed lineup
No notable risk
71
Nick Sogard
1+ Hit
Boston Red Sox
Why it stands out
Batting 5th, confirmed lineup
No notable risk
71
Josh Naylor
1+ Hit
Seattle Mariners
Why it stands out
Batting 4th, confirmed lineup
Main risk
Recent hit rate has cooled
70
Wilyer Abreu
1+ Hit
Boston Red Sox
Why it stands out
Batting 4th, confirmed lineup
Main risk
Elevated recent strikeout rate
Expected Game Shape
BalancedLow confidence
Competitive profile without a clear stylistic tilt. Mariners bring stronger recent momentum. Red Sox bring more power.
Early edge Mariners Driver No single dominant factor Volatility Moderate
- Both probable starters grade around the 43rd percentile in combined suppression.
- Mariners are trending up; Red Sox are trending steady.
Storylines to Watch
Is Mickey Gasper the one to watch?
Mickey Gasper enters as Red Sox's hottest bat. Total bases per PA is up 132% over his prior baseline, with hits in 6 of his last 8 games. He has trimmed his strikeout rate to 7%.
0.286 hit rate · 0.786 TB/PA · 0.218 hit rate · 0.338 TB/PA
Can Willson Contreras snap out of it?
Willson Contreras has cooled off. Total bases per PA is down 61% over his prior baseline, with hits in 2 of his last 7 games.
0.100 hit rate · 0.167 TB/PA · 0.229 hit rate · 0.430 TB/PA
Can Mariners handle Patrick Sandoval's strikeout stuff?
Mariners have been a below-average contact team while Patrick Sandoval misses bats at an above-average rate — a swing factor early.
Mariners contact percentile: 14
Based on plate appearances before 2026-09-02, with today's posted lineups when available. Injuries, weather, bullpen availability, and park factors are not yet included.