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Model picks & player props
MLB
Fenway Park, Boston
Outdoor
Wed 2 Sep 2026, 4:10 PM ET
Seattle Mariners
VS
Boston Red Sox

Seattle Mariners vs Boston Red Sox Prediction & Picks

Our model graded 70 markets for Seattle Mariners vs Boston Red Sox and backs Over 9.5 hardest, a long shot, and $100 on it returns about $246.

20
Game markets graded
50
Props graded
The model's one call for this gamethe prediction, first Free
Over 9.5 total runs
Over 9.5 Total Runs
You bet$10 If it wins$24.60Best price+146
Our confidenceLong-shot
Chance to win38.9%
The price says39.9%

The model graded 70 markets for Seattle Mariners vs Boston Red Sox (MLB) and this is the one it backs hardest — a long shot. A $100 bet returns about $246 if it lands. This one is free — every other market and all player props are Pro. Tip-off Wed 2 Sep 2026, 4:10 PM ET at Fenway Park.

This game's bets

The rest of this game's boardgraded market by market
Total Runs Over 9.5 Long-shot39% chance +146
Total Runs Members only Lean58% chance Members
Spread Members only Long-shot36% chance Members
Moneyline - 1st 5 Innings Members only Lean49% chance Members
Total Runs - 1st 1 Innings Members only Lean49% chance Members
Total Runs - 1st 5 Innings Members only Long-shot28% chance Members
Pitcher - Walks × 1 prop Highup to 93% Members
Batter - Home Runs × 6 props Leanup to 41% Members
Batter - Total Bases × 6 props Highup to 67% Members
Batter - RBIs × 7 props Highup to 82% Members
Batter - Hits + Runs + RBIs × 3 props Leanup to 42% Members
Batter - Walks × 11 props Highup to 98% Members
Batter - Runs Scored × 4 props Long-shotup to 30% Members
Batter - Doubles × 4 props Long-shotup to 32% Members
High = 60%+ chance to win · Lean = 40–60% · Long-shot = under 40%

Seattle Mariners and Boston Red Sox last met on Wed 2 Sep 2026: Seattle Mariners won 8-3. Their next game gets a fresh preview here the moment it is priced. Today's board: every MLB game priced right now.

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Game picks

GOOD PRICE in green
Total Runs
Over
9.5
+ 19 more markets
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All 20 game markets and 50 player props for this matchup — every line, every call the model backs — plus every pick across the slate. Join 67,149+ members.

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Calibrated model vs market

Our chance vs the price, market by market
PickMarketModel lean
OverTotal RunsThe model likes this price 🔒 Unlock with Pro
OverTotal RunsThe model likes this price 🔒 Unlock with Pro
OverTotal RunsThe model likes this price 🔒 Unlock with Pro
OverTotal RunsThe model likes this price 🔒 Unlock with Pro
OverTotal RunsThe model likes this price 🔒 Unlock with Pro
OverTotal RunsThe model likes this price 🔒 Unlock with Pro
OverTotal RunsThe model likes this price 🔒 Unlock with Pro
OverTotal RunsThe model likes this price 🔒 Unlock with Pro
OverTotal RunsThe model likes this price 🔒 Unlock with Pro
OverTotal RunsThe model likes this price 🔒 Unlock with Pro
OverTotal RunsThe model likes this price 🔒 Unlock with Pro
OverTotal RunsThe model likes this price 🔒 Unlock with Pro
OverTotal RunsThe model likes this price 🔒 Unlock with Pro
Boston Red SoxSpreadThe model likes this price 🔒 Unlock with Pro
OverTotal RunsThe model likes this price 🔒 Unlock with Pro
Seattle MarinersMoneyline - 1st 5 InningsThe model likes this price 🔒 Unlock with Pro
OverTotal RunsThe model likes this price 🔒 Unlock with Pro
OverTotal RunsThe model likes this price 🔒 Unlock with Pro
OverTotal Runs - 1st 1 InningsThe model likes this price 🔒 Unlock with Pro
OverTotal Runs - 1st 5 InningsThe model likes this price 🔒 Unlock with Pro

Which price is actually worth taking?

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Injuries & who's out

Injuries & availability

Seattle Mariners

  • Josh Naylor 1BOut
  • Cal Raleigh COut
  • Michael Toglia 1BOut
  • Kade Anderson SPDay-to-day
  • Andres Munoz RPOut
  • Brock Rodden SSOut
  • Nick Davila RPOut
  • Matt Brash RPOut
  • Brendan Donovan 3BOut
  • Brennen Davis CFOut
  • Colt Emerson SSOut
  • Emerson Hancock SPOut
  • Luke Raley RFOut
  • Cole Wilcox RPOut
  • Will Wilson 3BOut
  • Logan Evans SPOut

Boston Red Sox

  • Caleb Durbin 3BOut
  • Garrett Whitlock RPOut
  • Roman Anthony LFOut
  • Tyron Guerrero RPOut
  • Masataka Yoshida DHOut
  • Mickey Gasper DHOut
  • Romy Gonzalez DHDay-to-day
  • Justin Slaten RPOut
  • Eli White CFOut
  • Johan Oviedo SPOut
  • Kutter Crawford SPOut
  • Eduardo Rivera SPOut
  • Triston Casas 1BOut
  • Zack Kelly RPOut
Availability updated Oct 11, 3:12PM UTC · refreshed roughly every 4 hours.

Weather & injury impact for this fixture

Conditions · who's out · how it moves the number
For Seattle Mariners vs Boston Red Sox: Ballpark wind and temperature can swing the run total, though the live per-park feed isn't wired into this page yet, and 30 players are listed out or questionable across both sides.
FactorThis fixture
Ballpark weatherWind and temperature at the park move run totals, but our ballpark weather module is pending a file-to-table persistence job.
Availability30 listed out or questionable (see Who's out above)

General rule: wind blowing out and warm air help the ball carry (more runs and home runs), while wind in and cold air suppress scoring; the starting pitchers listed above are the single biggest driver of the run total.

Ballpark weather module pending a file-to-table persistence job (owner). We won't show a wind/temperature number until it's persisted to the database.

Pro — weather & injury-adjusted view

See the weather- and injury-adjusted projected line and the model's with/without delta for this fixture. 🔒 Unlock with Pro

Player props

GOOD PRICE in green
PlayerTeamStat
Patrick Sandoval Pitcher - Walks
Dominic Canzone Batter - Home Runs
Josh Naylor CLE Batter - Total Bases
Mickey Gasper Batter - Home Runs
Randy Arozarena TBR Batter - Home Runs

+ 50 player props graded for this game — the line, the call and how much to put on each, with Pro.

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Betting angles

Markets & form
MoneylineBoston Red SoxNo line posted
2-3L5 record
L5 RF1.8L5 RA3.8Home L52-3vs Seattle Mariners L51-4

Boston Red Sox moneyline form: last five 2-3, 1.8 runs/gm.

Run LineBoston Red Sox run lineNo line posted
2-3L5 record
L5 RF1.8L5 RA3.8Home L52-3vs Seattle Mariners L51-4

Boston Red Sox spread form: last five 2-3, 1.8 runs/gm.

Total RunsGame total · Boston Red Sox vs Seattle MarinersNo line posted

Boston Red Sox total runs form: last five 2-3, 1.8 runs/gm.

Team Total RunsBoston Red Sox team totalNo line posted
3.5runs we expect
L5 RF1.8L5 RA3.8Home L52-3vs Seattle Mariners L51-4

Boston Red Sox team total runs form: last five 2-3, 1.8 runs/gm.

Seattle Mariners @ Boston Red Sox — what the model found

Our model graded 70 betting markets for Seattle Mariners at Boston Red Sox — 20 on the game itself and 50 on individual players. One pick is free on this page.

20
Game markets graded
50
Player bets graded

The model checked every betting market for this game and graded 70 of them. One pick is free on this page — the one the model likes most. Scroll down to see it.

🔒 The other 69 graded calls for this game — with how much to bet on each — are for members.
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Seattle Mariners vs Boston Red Sox — recent results

Boston Red Sox have won 2 of their last 5 games; Seattle Mariners have won 3 of their last 5.

Boston Red Sox — last 5
ResultScoreOpponentWhere
L2–9NYYAway
L0–9NYYAway
L2–6CHCHome
W2–0CHCHome
W4–3CHCHome
Seattle Mariners — last 5
ResultScoreOpponentWhere
W8–4LAAHome
W7–3LAAHome
L5–7LAAHome
L4–6LAAHome
W6–5HOUHome

Seattle Mariners vs Boston Red Sox — last-5 form comparison

Over their last five games Boston Red Sox are scoring 1.6 runs per game (2-3) while Seattle Mariners are at 1.8 (2-3); Boston Red Sox pitchers are allowing 1.6 earned runs per game versus 1.0 for Seattle Mariners.

1.6
Boston Red Sox runs/G
1.8
Seattle Mariners runs/G
Last 5 gamesBoston Red SoxSeattle Mariners
Runs / game1.61.8
Hits / game2.02.8
Home runs / game0.60.8
Walks drawn / game0.60.6
Batter K / game2.02.2
Earned runs allowed / game1.61.0
Pitching K / game2.00.8
Walks allowed / game0.81.2
L5 record2-32-3

Seattle Mariners vs Boston Red Sox — recent meetings

These two have met 6 times recently: Boston Red Sox won 3, Seattle Mariners won 3.

DateBoston Red SoxSeattle MarinersWinner
Sep 238Seattle Mariners
Sep 169Seattle Mariners
Aug 3198Boston Red Sox
Jun 2151Boston Red Sox
Jun 2113Seattle Mariners
Jun 2062Boston Red Sox

Who’s out or in doubt

30 players are listed as out or in doubt for this game.

Boston Red Sox
PlayerStatus
Caleb Durbin 3BOUT
Garrett Whitlock RPOUT
Roman Anthony LFOUT
Tyron Guerrero RPOUT
Masataka Yoshida DHOUT
Mickey Gasper DHOUT
Romy Gonzalez DHDAY-TO-DAY
Justin Slaten RPOUT
Seattle Mariners
PlayerStatus
Josh Naylor 1BOUT
Cal Raleigh COUT
Michael Toglia 1BOUT
Kade Anderson SPDAY-TO-DAY
Andres Munoz RPOUT
Brock Rodden SSOUT
Nick Davila RPOUT
Matt Brash RPOUT

The full availability report — with what each missing player means for the bets — is further down this page.

Seattle Mariners @ Boston Red Sox — model preview

Our Seattle Mariners at Boston Red Sox prediction for September 3, 2026, plus every bet we like in the game and how confident we are in each.

On September 3, 2026 our model has run Seattle Mariners at Boston Red Sox and priced every market it can. Our strongest call is Boston Red Sox vs Seattle Mariners: Over 6 Total Runs (-333), which we rate HIGH confidence. We walk through all 6 bets we like in this game below. Everything below is our own number against the price the book is offering, written in plain English with how confident we are in words.

Every bet we like in this game

🔒 The other 6 write-ups for this game — with how much to bet on each — are Pro.
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About this matchup

How we read the game

This page tracks the Bet Better model's pick history and predictions for Seattle Mariners vs Boston Red Sox in the MLB. You may also see this matchup written as Mariners vs Sox, or as Sox vs Mariners. The most recent game between them was Wednesday 2 September 2026 at Fenway Park. The model has generated 20 game picks and 50 player props for this matchup. Review the picks and historical data above to guide your MLB betting strategy for this matchup.

Seattle Mariners vs Boston Red Sox head-to-head record

Final scores · 25 meetings on record
Boston Red Sox 13–12 across the last 25 meetings · these games average 9.6 runs (meetings on record since 2023)

Last meeting: Wed 2 Sep 2026, Seattle Mariners at Boston Red Sox: the Mariners won 8-3.

DateGameScoreWinner
2 Sep 2026Seattle Mariners @ Boston Red Sox3–8Seattle Mariners
1 Sep 2026Seattle Mariners @ Boston Red Sox6–9Seattle Mariners
31 Aug 2026Seattle Mariners @ Boston Red Sox9–8Boston Red Sox
21 Jun 2026Boston Red Sox @ Seattle Mariners3–1Seattle Mariners
20 Jun 2026Boston Red Sox @ Seattle Mariners2–6Boston Red Sox
19 Jun 2026Boston Red Sox @ Seattle Mariners2–6Boston Red Sox
18 Jun 2025Boston Red Sox @ Seattle Mariners1–3Boston Red Sox
17 Jun 2025Boston Red Sox @ Seattle Mariners8–0Seattle Mariners
16 Jun 2025Boston Red Sox @ Seattle Mariners0–2Boston Red Sox
24 Apr 2025Seattle Mariners @ Boston Red Sox3–4Seattle Mariners

Table shows the last 10 — the record above counts all 25 meetings on file.

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