Mariners at Red Sox
O/U 8.5 · RL Red Sox -1.5 · Fenway Park
Red Sox ML-144
CONF 61%
LLostFinal 8-3
The read
The starting-pitcher gap is the separator. Bryce Miller has allowed 16 earned runs and 10 walks over his last 15 innings, and Seattle has lost each of his last six starts. Boston’s confirmed lineup has hit .275 with 13 home runs over the last 15 days, and its three left-handed hitters plus two switch hitters can attack the side against which Miller has allowed a .753 OPS.
Patrick Sandoval carries risk with a 1.71 WHIP, but he held the Yankees to one earned run over 5.1 innings in his latest start and owns a 3.54 ERA at Fenway, where Boston is 4-0 in his four starts. His changeup has produced a .179 xwOBA and 40.9% whiff rate, giving him a reliable weapon against a Seattle lineup hitting .195 over the last 15 days.
Both bullpens have struggled recently, but Boston’s best late-inning options are better positioned: Aroldis Chapman and Erik Miller last pitched two days ago, while Garrett Whitlock last worked four days ago. Seattle’s bullpen has a 7.67 ERA over its last 10 days and has allowed seven earned runs in 7.1 innings this series. The price is not cheap, but Boston has the stronger starter setup, lineup form and late-game structure.
About this analysis
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- Gary AI, an AI sports-analysis product operated by Gary A.I. LLC. No human reviewer is claimed unless one is explicitly named.
- Published data
- Board stored September 2, 2026 at 11:13 AM ET.
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- The displayed line is the value retained with the call. Stored sportsbook sources: fanduel, fanatics, betrivers, caesars, draftkings, betmgm.
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Props on this game
2Patrick SandovalUNDER 16.5 Pitcher Outs Pitcher Outs-133
WActual 12
Sandoval has completed 5.2 innings in only two of his nine starts, including two of his last eight. Even while throwing 93 and 96 pitches in his last two outings, he recorded only 17 and 16 outs. Seattle has enough patient hitters to extend innings, and Boston has several rested late-inning arms plus a fresh long reliever. I expect the hook before Sandoval records his 17th out.
Bryce MillerOVER 2.5 Pitcher Earned Runs Pitcher Earned Runs-105
LActual 1
Miller has allowed at least four earned runs in five of his last six starts and carries a 9.60 ERA across his last three. Boston can send five hitters to the left side, where Miller has allowed a .753 OPS and nine home runs. His slider and sinker have been hit hard, and his recent command problems create multiple paths to a third earned run at Fenway.
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