Red Sox vs Marlins Prediction, Odds, Moneyline, Spread & Over/Under for Aug. 15

Odds updated as of 5:17 a.m.

MLB action on Friday includes the Boston Red Sox facing the Miami Marlins.

All the information you need to make smart bets on this game at FanDuel Sportsbook can be found below. Check out all of the latest MLB betting lines here.

Red Sox vs Marlins Game Info

• Boston Red Sox (66-56) vs. Miami Marlins (58-63)
• Date: Friday, August 15, 2025
• Time: 7:10 p.m. ET
• Venue: Fenway Park -- Boston, Massachusetts
• Coverage: NESN and FDSFL

Red Sox vs Marlins Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: BOS: (-168) | MIA: (+142)
• Spread: BOS: -1.5 (+126) | MIA: +1.5 (-152)
• Total: 8.5 -- Over: (-122) | Under: (-100)

Red Sox vs Marlins Probable Starting Pitchers

Probable Pitchers: Lucas Giolito (Red Sox) - 8-2, 3.77 ERA vs Sandy Alcantara (Marlins) - 6-11, 6.55 ERA

This contest's pitching matchup is set, as the Red Sox will send Lucas Giolito (8-2) to the mound, while Sandy Alcantara (6-11) will get the nod for the Marlins. Giolito's team is 13-5-0 against the spread this season in his starts. Giolito's team has won 75% of his starts when they are favored on the moneyline (6-2). When Alcantara starts, the Marlins are 10-13-0 against the spread. The Marlins are 9-9 in Alcantara's 18 starts this season that they were the moneyline underdog.

Red Sox vs Marlins Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Red Sox win (58.2%)

Red Sox vs Marlins Moneyline

• The moneyline numbers for Red Sox vs. Marlins reveal Boston as the favorite (-168) and Miami as the underdog (+142) on the road.

Red Sox vs Marlins Spread

• The Red Sox are hosting the Marlins and are favored by 1.5 runs on the spread. The Red Sox are +126 to cover the runline, with the Marlins being -152.

Red Sox vs Marlins Over/Under

• Red Sox versus Marlins, on Aug. 15, has an over/under of 8.5, with the over being -122 and the under -100.

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Red Sox vs Marlins Betting Trends

• The Red Sox have been victorious in 42, or 58.3%, of the 72 contests they have been chosen as favorites in this season.
• This season Boston has come away with a win 11 times in 16 chances when named as a favorite of at least -168 on the moneyline.
• The Red Sox and their opponents have gone over in 59 of their 121 games with a total set by sportsbooks this season.
• In 121 games with a line this season, the Red Sox have a mark of 68-53-0 against the spread.
• The Marlins have won 48% of the games this season they were the underdog on the moneyline (47-51).
• Miami is 14-17 (winning 45.2% of its games) when playing as a moneyline underdog of +142 or longer.
• The Marlins have played in 117 games with a set over/under, and have combined with opponents to go over the total 55 times (55-62-0).
• The Marlins have gone 69-48-0 against the spread this season.

Red Sox Player Leaders

• Jarren Duran leads Boston OPS (.787) this season. He has a .263 batting average, an on-base percentage of .334, and a slugging percentage of .453.
• He ranks 65th in batting average, 67th in on-base percentage, and 61st in slugging among qualified hitters in the majors.
• Ceddanne Rafaela is hitting .259 with 24 doubles, three triples, 14 home runs and 20 walks. He's slugging .436 with an on-base percentage of .300.
• Among qualified batters, his batting average ranks him 80th, his on-base percentage 134th, and his slugging percentage 74th.
• Rafaela heads into this game looking to extend his three-game hit streak. During his last five outings he is batting .200 with a double, two walks and an RBI.
• Wilyer Abreu leads Boston in total hits (87) this season, and 37 of those have gone for extra bases.
• Abreu enters this game with two games in a row with at least one hit. During his last five outings he is hitting .333 with two doubles, four walks and three RBIs.
• Trevor Story is batting .256 with a .301 OBP and 75 RBI for Boston this season.
• Story has hit safely in two games in a row. During his last five outings he is hitting .182 with a double and two RBIs.

Marlins Player Leaders

• Kyle Stowers has put up a team-best OBP (.365), and leads the Marlins in hits (113). He's batting .285 and slugging.
• Including all the qualified hitters in the big leagues, he ranks 22nd in batting average, 21st in on-base percentage and eighth in slugging percentage.
• Xavier Edwards paces his team with a .379 slugging percentage. He has a batting average of .305 with an on-base percentage of .364.
• He is sixth in batting average, 24th in on-base percentage and 134th in slugging percentage in the big leagues.
• Otto Lopez is hitting .241 with 16 doubles, 11 home runs and 38 walks.
• Agustin Ramirez has 25 doubles, a triple, 17 home runs and 26 walks while batting .236.

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