Diamondbacks vs Marlins Prediction, Odds, Moneyline, Spread & Over/Under for Sept. 16

Odds updated as of 9:12 p.m.

The Arizona Diamondbacks versus the Miami Marlins is on the MLB schedule for Wednesday.

Here's everything you need to know before checking out today's MLB odds and spreads on FanDuel Sportsbook.

Diamondbacks vs Marlins Game Info

• Arizona Diamondbacks (80-72) vs. Miami Marlins (75-77)
• Date: Wednesday, September 16, 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: (-136) | MIA: (+116)
• Spread: ARI: -1.5 (+150) | MIA: +1.5 (-182)
• Total: 8.5 -- Over: (-132) | Under: (+108)

Diamondbacks vs Marlins Probable Starting Pitchers

Probable Pitchers: Merrill Kelly (Diamondbacks) - 9-13, 4.97 ERA vs Ryan Gusto (Marlins) - 1-5, 4.14 ERA

The Diamondbacks will give the nod to Merrill Kelly (9-13, 4.97 ERA), who is eyeing win No. 10 on the season, and the Marlins will turn to Ryan Gusto (1-5, 4.14 ERA). Kelly and his team have a record of 14-13-0 against the spread when he starts. Kelly's team has a record of 5-5 this season when he starts and they are the favorite on the moneyline. The Marlins have an 8-8-0 record against the spread in Gusto's starts. The Marlins have a 6-5 record in Gusto's 11 starts this season when they were the underdog on the moneyline.

Diamondbacks vs Marlins Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Marlins win (56.8%)

Diamondbacks vs Marlins Moneyline

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

Diamondbacks vs Marlins Spread

• The Diamondbacks are favored by 1.5 runs at home versus the Marlins. The Diamondbacks are +150 to cover the spread, while the Marlins are -182.

Diamondbacks vs Marlins Over/Under

• Diamondbacks versus Marlins on Sept. 16 has an over/under of 8.5 runs, with the odds on the over -132 and the under set at +108.

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Diamondbacks vs Marlins Betting Trends

• The Diamondbacks have been chosen as favorites in 63 games this year and have walked away with the win 36 times (57.1%) in those games.
• Arizona has a record of 14-11 in contests when sportsbooks favor them by -136 or more on the moneyline.
• Contests with the Diamondbacks have gone over the total set by sportsbooks in 64 of 150 chances this season.
• The Diamondbacks are 78-72-0 against the spread in their 150 games with a line set by sportsbooks this season.
• The Marlins have been the moneyline underdog 84 total times this season. They've finished 34-50 in those games.
• Miami has gone 18-24 when playing as a moneyline underdog with odds of +116 or longer (42.9%).
• The Marlins have played in 150 games with a set over/under, and have combined with their opponents to go over the total 76 times (76-72-2).
• The Marlins have collected a 77-73-0 record ATS this season (covering 51.3% of the time).

Diamondbacks Player Leaders

• Corbin Carroll is hitting .240 with 30 doubles, 16 triples, 21 home runs and 70 walks. He has an on-base percentage of .332 while slugging .469.
• Among qualified hitters, he is 100th in batting average, his on-base percentage ranks 66th, and he is 33rd in slugging.
• Carroll has recorded a base hit in three games in a row. In his last five games he is batting .250 with two home runs, a walk and six RBIs.
• Ketel Marte has 29 doubles, three triples, 22 home runs and 47 walks. He's batting .250 and slugging .444 with an on-base percentage of .317.
• Among qualifying hitters, he ranks 78th in batting average, 91st in on-base percentage and 51st in slugging percentage.
• Marte has picked up a hit in three games in a row. During his last five outings he is batting .250 with five doubles, a walk and four RBIs.
• Geraldo Perdomo has 132 hits this season and has a slash line of .251/.359/.362.
• Gabriel Moreno leads Arizona in OBP (.382), slugging percentage (.474) and total hits (133) this season.
• Moreno brings a five-game hitting streak into this game. During his last five outings he is hitting .381 with two home runs, three walks and four RBIs.

Marlins Player Leaders

• Otto Lopez has racked up a slugging percentage of .439, a team-high for the Marlins. He's batting .305 with an on-base percentage of .347.
• Including all qualified hitters in MLB, his batting average puts him fifth, his on-base percentage ranks 47th, and he is 60th in slugging.
• Xavier Edwards has a .362 on-base percentage to pace his team. He has a batting average of .283 while slugging .376.
• Including all qualified hitters, he ranks 19th in batting average, 26th in on-base percentage and 114th in slugging percentage.
• Javier Sanoja is batting .292 with 30 doubles, five triples, nine home runs and 25 walks.
• Jakob Marsee has 18 doubles, six triples, 10 home runs and 73 walks while batting .224.

Diamondbacks vs Marlins Head to Head

• 9/15/2026: 4-2 MIA (Favorite: Diamondbacks, Spread: -1.5, Total: 8.5, Favorite Moneyline: -152, Underdog Moneyline: +128)
• 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)

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