The Arizona Diamondbacks host the Miami Marlins on September 15, 2026. First pitch from Chase Field is scheduled for 9:40 p.m. ET. The game will be broadcast on MIAM.
The Diamondbacks are favored by -152 on the moneyline and by -1.5 on the run line. The Marlins are +128 on the moneyline and +1.5 on the run line. The total is set at 8.5 runs.
Find my MLB picks and Marlins vs Diamondbacks prediction below, as well as probable pitchers, weather report, and more.
Marlins vs Diamondbacks Prediction
- Marlins vs Diamondbacks Pick: Diamondbacks ML (-152)
My Marlins vs Diamondbacks best bet is on Arizona to win outright. Make sure to find the best odds by checking our live MLB odds page, and download the Action Network app for more picks and analysis.
Marlins vs Diamondbacks Odds
| Marlins Odds | ||
|---|---|---|
| Spread | Total | Moneyline |
+1.5 -170 | 8.5 -115o / -105u | +128 |
| Diamondbacks Odds | ||
|---|---|---|
| Spread | Total | Moneyline |
-1.5 +140 | 8.5 -115o / -105u | -152 |
- Marlins vs Diamondbacks moneyline: Marlins +128, Diamondbacks -152
- Marlins vs Diamondbacks over/under: 8.5 (-115o / -105u)
- Marlins vs Diamondbacks spread: Marlins +1.5 (-170), Diamondbacks -1.5 (+140)
Marlins vs Diamondbacks Probable Pitchers
| Janson Junk (RHP, MIA) | Stat | Michael Soroka (RHP, ARI) |
|---|---|---|
| 6-9 | W-L | 8-5 |
| 1.7 | fWAR (FanGraphs) | 2.5 |
| 4.54 / 4.38 | ERA / xERA | 3.53 / 4.32 |
| 4.21 / 4.61 | FIP / xFIP | 3.04 / 3.74 |
| 9.3 | K-BB% | 17.0 |
| 43.4 | GB% | 36.7 |
| .296 | BABIP | .299 |
| 100 | Stuff+ | 94 |
| 110 | Location+ | 105 |
Marlins vs Diamondbacks MLB Betting Preview, Prediction
Contrary to the pillow fight taking place in the AL, the NL West race has been a dogfight, with both the Padres and Diamondbacks offering high-quality play over the last two months of the season.
Arizona managed a late rally in Monday's series opener and should be well situated for another strong offensive outing Tuesday versus Janson Junk and the Marlins' soft bullpen.
Junk has been hard-hit 39.7% of the time this season while striking out just 15.7% of batters. He's allowed batters to slug .480 on the road, which is certainly concerning as he matches up versus the Diamondbacks at batter-friendly Chase Field.
If Junk hangs in surprisingly well, the Diamondbacks could mount yet another late rally against a Marlins bullpen that has struggled to an ERA of 4.98 over the last 30 days. The underlying metrics are also far from convincing, with a 4.95 xFIP and a 6.2% strikeout-minus-walk rate over that span.
Michael Soroka was not overly effective working in bulk relief in his appearance back off the IL, but unless we downgrade him significantly based on that outing, the Diamondbacks still appear worthy of being a larger favorite in this matchup based on his 4.32 xERA and 3.72 xFIP this season.
Arizona's bullpen ranks 13th in ERA this season and has posted a 3.56 ERA over the last 30 days, which is no surprise, as the unit projects to be quite strong on paper.
Pick: Diamondbacks ML (-152, FanDuel | Play to -160)
