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

Odds updated as of 2:11 a.m.

The MLB's Friday schedule includes the Boston Red Sox taking on the Miami Marlins.

Before you do any MLB betting on this game at FanDuel Sportsbook, here's what you need to know.

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 (+122) | MIA: +1.5 (-146)
• 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 answer the bell for the Marlins. Giolito's team is 13-5-0 against the spread this season in his starts. Giolito's team is 6-2 this season when he starts and they are the moneyline favorite. The Marlins are 10-13-0 against the spread when Alcantara starts. The Marlins have been the underdog on the moneyline in 18 of Alcantara's starts this season, and they went 9-9 in those games.

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

• Boston is a -168 favorite on the moneyline, while Miami is a +142 underdog on the road.

Red Sox vs Marlins Spread

• The Red Sox are hosting the Marlins and are favored by 1.5 runs (+122 to cover) on the runline. Miami is -146 to cover.

Red Sox vs Marlins Over/Under

• A total of 8.5 runs has been set for the Red Sox-Marlins game on Aug. 15, with the over available at -122 and the under at -100.

Bet on Boston Red Sox vs. Miami Marlins on FanDuel today!

Red Sox vs Marlins Betting Trends

• The Red Sox have been chosen as favorites in 72 games this year and have walked away with the win 42 times (58.3%) in those games.
• Boston has a record of 11-5 when favored by -168 or more this year.
• The Red Sox and their opponents have gone over the total this season in 59 of their 121 opportunities.
• 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 47 of the 98 games they were the moneyline underdog this season (48%).
• Miami has gone 14-17 when playing as a moneyline underdog with odds of +142 or longer (45.2%).
• 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 collected a 69-48-0 record against the spread this season (covering 59% of the time).

Red Sox Player Leaders

• Jarren Duran leads Boston with an OBP of .334, plus a team-best slugging percentage of .453. He's batting .263 on the season.
• Among qualifying hitters in MLB, he ranks 65th in batting average, 67th in on-base percentage, and 61st in slugging.
• Ceddanne Rafaela is batting .259 with 24 doubles, three triples, 14 home runs and 20 walks. He's slugging .436 with an on-base percentage of .300.
• Among qualifying batters, he ranks 80th in batting average, 134th in on-base percentage and 74th in slugging percentage.
• Rafaela enters this game looking to extend his three-game hit streak. In his last five games he is hitting .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 heads into this game with two games in a row with at least one hit. During his last five outings he is batting .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 enters this matchup on a two-game hitting streak. In his last five games he is batting .182 with a double and two RBIs.

Marlins Player Leaders

• Kyle Stowers has 113 hits with a .365 on-base percentage, leading the Marlins in both categories. He's batting .285 and slugging .538.
• Including all qualifying hitters in the big leagues, he ranks 22nd in batting average, 21st in on-base percentage and eighth in slugging percentage.
• Xavier Edwards is slugging .379 to lead his team. 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 MLB.
• Otto Lopez is hitting .241 with 16 doubles, 11 home runs and 38 walks.
• Agustin Ramirez is batting .236 with 25 doubles, a triple, 17 home runs and 26 walks.

Sign up for FanDuel Sportsbook and FanDuel Daily Fantasy today!