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

Odds updated as of 4:12 a.m.

Wednesday's slate in the MLB includes a matchup between the Arizona Diamondbacks and 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 (80-72) 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: (-134) | MIA: (+114)
• Spread: ARI: -1.5 (+152) | MIA: +1.5 (-184)
• 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 ball to Merrill Kelly (9-13, 4.97 ERA), who is eyeing win No. 10 on the season, and the Marlins will counter with Ryan Gusto (1-5, 4.14 ERA). Kelly and his team are 14-13-0 ATS this season when he starts. When Kelly starts a game and his team is the favorite on the moneyline, they have a record of 5-5. The Marlins are 8-8-0 against the spread when Gusto starts. The Marlins have a 6-5 record in Gusto's 11 starts this season when they were the moneyline underdog.

Diamondbacks vs Marlins Prediction & Pick

All MLB win probability predictions and picks are according to numberFire.
Prediction: Marlins win (57.2%)

Diamondbacks vs Marlins Moneyline

• Looking at the moneyline for Diamondbacks-Marlins, Arizona is the favorite at -134, and Miami is +114 playing on the road.

Diamondbacks vs Marlins Spread

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

Diamondbacks vs Marlins Over/Under

• The over/under for Diamondbacks-Marlins on Sept. 16 is 8.5. The over is -132, and the under is +108.

Bet on Arizona Diamondbacks vs. Miami Marlins on FanDuel today!

Diamondbacks vs Marlins Betting Trends

• The Diamondbacks have been favorites in 63 games this season and have come away with the win 36 times (57.1%) in those contests.
• This year Arizona has won 17 of 29 games when listed as at least -134 on the moneyline.
• The Diamondbacks and their opponents have gone over in 64 of their 150 games with a total set by sportsbooks this season.
• In 150 games with a line this season, the Diamondbacks have a mark of 78-72-0 against the spread.
• The Marlins have put together a 34-50 record in games they were listed as the moneyline underdog (winning 40.5% of those games).
• Miami has a record of 18-27 when playing as a moneyline underdog with odds of +114 or longer (40%).
• The Marlins have played in 150 games with an over/under set, and have combined with opponents to go over the total 76 times (76-72-2).
• The Marlins have a 77-73-0 record against the spread this season (covering 51.3% of the time).

Diamondbacks Player Leaders

• Corbin Carroll has 30 doubles, 16 triples, 21 home runs and 70 walks while hitting .240. He has an on-base percentage of .332 and a slugging percentage of .469.
• Among all qualified batters in the majors, his batting average ranks 101st, his on-base percentage ranks 66th, and he is 34th in slugging.
• Carroll has picked up at least one hit in three straight games. In his last five games he is batting .250 with two home runs, a walk and six RBIs.
• Ketel Marte is hitting .250 with 29 doubles, three triples, 22 home runs and 47 walks, while slugging .444 with an on-base percentage of .317.
• Among qualified hitters, his batting average places him 79th, his on-base percentage 91st, and his slugging percentage 51st.
• Marte takes a three-game streak with at least one hit into this contest. In his last five games he is hitting .250 with five doubles, a walk and four RBIs.
• Geraldo Perdomo is batting .251 with a .362 slugging percentage and 50 RBI this year.
• Gabriel Moreno leads Arizona in OBP (.382), slugging percentage (.474) and total hits (133) this season.
• Moreno has safely hit in five games in a row. In his last five games he is hitting .381 with two home runs, three walks and four RBIs.

Marlins Player Leaders

• Otto Lopez has racked up a team-best .439 slugging percentage. He's batting .305 with an on-base percentage of .347.
• Including all the qualified hitters in the majors, he is fifth in batting average, 46th in on-base percentage and 60th in slugging percentage.
• Xavier Edwards paces his team with a .362 OBP. He has a batting average of .283 while slugging .376.
• His batting average is 20th among all qualified players, his on-base percentage ranks 26th, and he is 116th in slugging.
• Javier Sanoja has 30 doubles, five triples, nine home runs and 25 walks while hitting .292.
• Jakob Marsee is hitting .224 with 18 doubles, six triples, 10 home runs and 73 walks.

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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