Red Sox vs. Mariners Predictions, Odds & Best Bet: Who'll Win Today?

The Boston Red Sox are at T-Mobile Park in Seattle for the final matchup of a three-game series as they get set to take on the Seattle Mariners at 4:10 p.m. ET (MLB Network). With Garrett Crochet getting the start for Boston, our Red Sox vs. Mariners prediction and odds expect a bounce-back game for the BoSox.

🔮 Red Sox vs. Mariners prediction & picks

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✅ Red Sox vs. Mariners prediction: Red Sox (-115 via BetRivers) ⭐⭐⭐
✅ Over/Under prediction: Under 6.5 (+102 via BetRivers) ⭐⭐⭐
✅ Best player prop pick: Garrett Crochet Over 18.5 outs (+139 via Caesars) ⭐⭐⭐

🆚 Who will win Red Sox vs. Mariners?

Though Seattle popped off for eight runs yesterday, today looks like it's set to be a low-scoring pitcher's duel with Crochet and Luis Castillo taking the mound. Our best NRFI bets today are even targeting this game to be scoreless after the first inning. 

With Crochet pitching at an AL Cy Young odds-contending level, Seattle is going to be in trouble. The Mariners have been inconsistent with their bats this season, so Boston should be able to pull out the win. I have the Red Sox taking this, 4-2.

✅ Moneyline pick: Red Sox will win (-115 via BetRivers)

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💰 Red Sox vs. Mariners best bet

Here is my best bet for today's Red Sox vs. Mariners matchup:

🧦 Garrett Crochet Over 18.5 outs

• Best odds: +139 via Caesars ($10 pays $13.90)
• Implied win probability: 41.84%

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While the Red Sox's World Series odds may be out the window following the trade of Rafael Devers to the San Francisco Giants, Crochet still gives fans a reason to watch. He's coming off one of his best outings of the season after going 8 1/3 innings and allowing just one earned run in a 2-1 win over the New York Yankees.

Now, Crochet is poised to last over six innings for the fourth time in five games - he's recorded 19-plus outs in eight of his last 14 starts. Seattle is 19th in the league in average (.242) and has a higher whiff percentage (27.4%) than the league average, which should have Crochet fired up, as he leads the AL in strikeouts (117) and sits third in K/9 (10.9).

Another safer option is taking the Over on Crochet's strikeouts line (7.5) at DraftKings, which offers -145 odds and pays a $6.90 profit on a $10 winning bet. The Mariners have struck out the fifth-most in MLB this season (639).

⚾ Red Sox vs. Mariners odds today

Here are the live odds for today's Red Sox vs. Mariners matchup. See all of today's MLB odds for the latest lines from our best MLB betting sites.

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