Guardians vs Marlins Prediction, Odds, Moneyline, Spread & Over/Under for Aug. 12

Odds updated as of 6:18 p.m.

MLB action on Tuesday includes the Cleveland Guardians taking on the Miami Marlins.

Before checking out the MLB betting lines on FanDuel Sportsbook, we've got you covered, in terms of the vital information regarding this game.

Guardians vs Marlins Game Info

• Cleveland Guardians (61-56) vs. Miami Marlins (57-61)
• Date: Tuesday, August 12, 2025
• Time: 6:40 p.m. ET
• Venue: Progressive Field -- Cleveland, Ohio
• Coverage: CLEG and FDSFL

Guardians vs Marlins Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: CLE: (-136) | MIA: (+116)
• Spread: CLE: -1.5 (+152) | MIA: +1.5 (-184)
• Total: 8.5 -- Over: (-122) | Under: (-100)

Guardians vs Marlins Probable Starting Pitchers

Probable Pitchers: Logan Allen (Guardians) - 7-9, 3.96 ERA vs Janson Junk (Marlins) - 6-2, 3.97 ERA

This contest's pitching matchup is set, as the Guardians will send Logan Allen (7-9) to the mound, while Janson Junk (6-2) will take the ball for the Marlins. Allen and his team are 10-10-0 ATS this season when he starts. Allen's team has been victorious in 71.4% of the games he's started as the moneyline favorite with a record of 5-2. The Marlins have a 7-1-0 record against the spread in Junk's starts. The Marlins are 5-2 in Junk's seven starts this season that they were the moneyline underdog.

Guardians vs Marlins Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Marlins win (54.7%)

Guardians vs Marlins Moneyline

• The moneyline numbers for Guardians vs. Marlins reveal Cleveland as the favorite (-136) and Miami as the underdog (+116) on the road.

Guardians vs Marlins Spread

• The Guardians are favored by 1.5 runs at home versus the Marlins. The Guardians are +152 to cover the spread, while the Marlins are -184.

Guardians vs Marlins Over/Under

• The over/under for the Guardians versus Marlins game on Aug. 12 has been set at 8.5, with -122 odds on the over and -100 odds on the under.

Bet on Cleveland Guardians vs. Miami Marlins on FanDuel today!

Guardians vs Marlins Betting Trends

• The Guardians have won in 31, or 64.6%, of the 48 contests they have been named as odds-on favorites in this year.
• Cleveland has a record of 13-5 when favored by -136 or more this year.
• Contests with the Guardians have gone over the total set by bookmakers in 52 of 114 chances this season.
• The Guardians have posted a record of 60-54-0 against the spread this season.
• The Marlins have won 46 of the 95 games they were the underdog on the moneyline this season (48.4%).
• Miami has a 34-37 record (winning 47.9% of its games) when it has played as a moneyline underdog of +116 or longer.
• The Marlins have played in 114 games with an over/under set, and have combined with their opponents to go over the total 53 times (53-61-0).
• The Marlins have covered 58.8% of their games this season, going 67-47-0 against the spread.

Guardians Player Leaders

• Jose Ramirez has 125 hits and an OBP of .365 to go with a slugging percentage of .509. All three of those stats are best among Cleveland hitters this season. He has a .289 batting average, as well.
• Among qualifying hitters in the majors, he ranks 18th in batting average, 21st in on-base percentage, and 15th in slugging.
• Steven Kwan is batting .278 with 21 doubles, a triple, nine home runs and 41 walks, while slugging .391 with an on-base percentage of .339.
• Among all qualifying hitters, he is 32nd in batting average, 61st in on-base percentage and 123rd in slugging percentage.
• Carlos Santana has collected 86 base hits, an OBP of .319 and a slugging percentage of .340 this season.
• Kyle Manzardo has 20 home runs, 52 RBI and a batting average of .244 this season.
• Manzardo has hit safely in four straight games. During his last five outings he is batting .462 with a double, two home runs, three walks and four RBIs.

Marlins Player Leaders

• Kyle Stowers has 110 hits with a .364 on-base percentage, leading the Marlins in both categories. He's batting .285 and slugging .541.
• Including all qualifying hitters in the big leagues, he is 23rd in batting average, 22nd in on-base percentage and eighth in slugging percentage.
• Xavier Edwards paces his team with a .368 slugging percentage. He has a batting average of .303 with an on-base percentage of .362.
• His batting average is seventh among all qualified players, his on-base percentage ranks 26th, and he is 140th in slugging.
• Otto Lopez is hitting .244 with 15 doubles, 11 home runs and 37 walks.
• Agustin Ramirez has 24 doubles, a triple, 17 home runs and 24 walks while batting .237.

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