Diamondbacks vs Marlins Prediction, Odds, Moneyline, Spread & Over/Under for Sept. 15

Odds updated as of 9:12 p.m.

The MLB slate on Tuesday includes the Arizona Diamondbacks facing the Miami Marlins.

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

Diamondbacks vs Marlins Game Info

• Arizona Diamondbacks (80-71) vs. Miami Marlins (74-77)
• Date: Tuesday, September 15, 2026
• Time: 9:40 p.m. ET
• Venue: Chase Field -- Phoenix, Arizona
• Coverage: Dbacks.TV and Marlins.TV

Diamondbacks vs Marlins Odds & Moneyline

• All MLB odds, betting lines and prop bets are available on FanDuel Sportsbook.
• Moneyline: ARI: (-152) | MIA: (+128)
• Spread: ARI: -1.5 (+138) | MIA: +1.5 (-166)
• Total: 8.5 -- Over: (-115) | Under: (-105)

Diamondbacks vs Marlins Probable Starting Pitchers

Probable Pitchers: Mike Soroka (Diamondbacks) - 8-5, 3.53 ERA vs Janson Junk (Marlins) - 6-9, 4.54 ERA

The probable pitchers are Mike Soroka (8-5) for the Diamondbacks and Janson Junk (6-9) for the Marlins. Soroka's team is 9-8-0 against the spread in his starts this season. Soroka's team has been victorious in 63.6% of the games he's started as the moneyline favorite with a record of 7-4. The Marlins are 11-11-0 against the spread when Junk starts. The Marlins have been the moneyline underdog in 12 of Junk's starts this season, and they went 5-7 in those matchups.

Diamondbacks vs Marlins Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Diamondbacks win (50%)

Diamondbacks vs Marlins Moneyline

• Looking at the moneyline for Marlins-Diamondbacks, Miami is the underdog at +128, and Arizona is -152 playing at home.

Diamondbacks vs Marlins Spread

• The Diamondbacks are 1.5-run home favorites on the runline against the Marlins. The Diamondbacks are +138 to cover, and the Marlins are -166.

Diamondbacks vs Marlins Over/Under

• An over/under of 8.5 has been set for Diamondbacks-Marlins on Sept. 15, with the over being -115 and the under -105.

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Diamondbacks vs Marlins Betting Trends

• The Diamondbacks have been chosen as favorites in 62 games this year and have walked away with the win 36 times (58.1%) in those games.
• This year Arizona has won eight of 13 games when listed as at least -152 on the moneyline.
• The Diamondbacks and their opponents have hit the over in 64 of their 149 games with a total set by oddsmakers this season.
• The Diamondbacks are 78-71-0 against the spread in their 149 games that had a posted line this season.
• The Marlins are 33-50 in games they were listed as the moneyline underdog (winning 39.8% of those games).
• Miami is 6-20 (winning just 23.1% of its games) when it has played as a moneyline underdog of +128 or longer.
• The Marlins have had an over/under set by bookmakers 149 times, and have combined with opponents to go over the total in 76 of those games (76-71-2).
• The Marlins are 76-73-0 ATS this season.

Diamondbacks Player Leaders

• Corbin Carroll leads Arizona with 130 hits, batting .240 this season with 67 extra-base hits. He has an on-base percentage of .331 and a slugging percentage of .470.
• Among qualified hitters in baseball, he is 101st in batting average, 66th in on-base percentage, and 31st in slugging.
• Carroll hopes to build on a two-game hitting streak in this matchup. During his last five outings he is batting .222 with two home runs and six RBIs.
• Ketel Marte is hitting .250 with 27 doubles, three triples, 22 home runs and 47 walks. He's slugging .441 with an on-base percentage of .317.
• His batting average is 77th among qualified players, his on-base percentage 94th, and his slugging percentage 55th.
• Marte enters this game looking to extend his two-game hit streak. In his last five games he is hitting .217 with three doubles, a walk and four RBIs.
• Geraldo Perdomo has hit nine homers with a team-high .363 SLG this season.
• Gabriel Moreno has a slash line of .301/.379/.467 this season and a team-best OPS of .846.
• Moreno takes a four-game hitting streak into this matchup. In his last five games he is hitting .333 with a home run, a walk and three RBIs.

Marlins Player Leaders

• Otto Lopez has racked up a team-best .441 slugging percentage. He's batting .307 with an on-base percentage of .347.
• Including all qualified hitters in MLB, his batting average puts him third, his on-base percentage ranks 45th, and he is 55th in slugging.
• Xavier Edwards paces his team with a .362 on-base percentage. He has a batting average of .283 while slugging .376.
• Including all qualifying players, he ranks 20th in batting average, 26th in on-base percentage and 112th in slugging percentage.
• Javier Sanoja has 30 doubles, five triples, nine home runs and 25 walks while hitting .293.
• Jakob Marsee has 18 doubles, six triples, 10 home runs and 73 walks while hitting .226.

Diamondbacks vs Marlins Head to Head

• 9/14/2026: 8-7 ARI (Favorite: Diamondbacks, Spread: -1.5, Total: 8.5, Favorite Moneyline: -134, Underdog Moneyline: +114)
• 6/11/2026: 2-0 MIA (Favorite: Marlins, Spread: -1.5, Total: 8.5, Favorite Moneyline: -124, Underdog Moneyline: +106)
• 6/10/2026: 8-0 MIA (Favorite: Diamondbacks, Spread: -1.5, Total: 8.5, Favorite Moneyline: -116, Underdog Moneyline: -102)
• 6/9/2026: 10-6 MIA (Favorite: Marlins, Spread: -1.5, Total: 7.5, Favorite Moneyline: -138, Underdog Moneyline: +118)
• 6/29/2025: 6-4 MIA (Favorite: Diamondbacks, Spread: -1.5, Total: 8.5, Favorite Moneyline: -190, Underdog Moneyline: +160)
• 6/28/2025: 8-7 MIA (Favorite: Diamondbacks, Spread: -1.5, Total: 9, Favorite Moneyline: -162, Underdog Moneyline: +136)
• 6/27/2025: 9-8 MIA (Favorite: Diamondbacks, Spread: -1.5, Total: 8.5, Favorite Moneyline: -172, Underdog Moneyline: +144)
• 4/17/2025: 6-4 ARI (Favorite: Diamondbacks, Spread: -1.5, Total: 8.5, Favorite Moneyline: -148, Underdog Moneyline: +126)
• 4/16/2025: 6-2 ARI (Favorite: Diamondbacks, Spread: -1.5, Total: 8.5, Favorite Moneyline: -146, Underdog Moneyline: +124)
• 4/15/2025: 10-4 ARI (Favorite: Diamondbacks, Spread: -1.5, Total: 9, Favorite Moneyline: -156, Underdog Moneyline: +132)

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