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Diamondbacks vs Marlins Prediction 9/15/26 MLB Picks Today

Miami Marlins (74-77) vs. Arizona Diamondbacks (80-71)
September 15, 2026 9:40 pm EDT
The Line: Arizona Diamondbacks -157 / Miami Marlins 130; Over/Under: 8.5
(Get latest betting odds)

The Miami Marlins and Arizona Diamondbacks meet Tuesday in MLB action at Chase Field. Here’s a Diamondbacks vs Marlins Prediction. This article will include a Diamondbacks vs Marlins Pick.

Miami Marlins Betting Preview

The Miami Marlins are 74-77 on the year and play the Padres and Cubs next. The Miami Marlins are batting .250 on the season, have a .327 OBP, and have a .402 slugging percentage. The Miami Marlins’ pitching staff has a 4.11 ERA and a 1.28 WHIP. Otto Lopez leads the Miami Marlins with 180 hits and 69 RBI, while Xavier Edwards and Javier Sanoja have combined for 266 hits and 115 RBI.

Janson Junk gets the ball for the Miami Marlins, and he is 6-9 with a 4.54 ERA and 74 strikeouts this season. This will be Junk’s second career game against the Arizona Diamondbacks.

Arizona Diamondbacks Betting Preview

The Arizona Diamondbacks are 80-71 on the year and play the Rockies and Yankees next. The Arizona Diamondbacks are batting .244 on the season, have a .316 OBP, and have a .396 slugging percentage. The Arizona Diamondbacks’ pitching staff has a 4.11 ERA and a 1.28 WHIP. Geraldo Perdomo leads the Arizona Diamondbacks with 131 hits and 50 RBI, while Corbin Carroll and Gabriel Moreno have combined for 261 hits and 140 RBI.

Michael Soroka gets the ball for the Arizona Diamondbacks, and he is 8-5 with a 3.53 ERA and 95 strikeouts this season. Soroka is 3-1 with a 1.90 ERA and 41 strikeouts in his career against the Miami Marlins.

Why the Arizona Diamondbacks will win

  • The Marlins have lost each of their last 11 road games against teams that held a winning record.
  • The home team has won each of the last four games between the Marlins and Diamondbacks.
  • The Marlins have failed to cover the run line in each of their last seven night games against NL opponents following a loss.
  • The Diamondbacks have covered the run line in each of their last five games as favorites against the Marlins following a win.
  • The Marlins have trailed after 5 innings in six of their last seven night games.
  • The Marlins have trailed after 3 innings in four of their last five night games.

Why the Miami Marlins will win

  • The Diamondbacks have lost each of their last four games as home favorites against the Marlins following a win.
  • The Marlins have won four of their last five games as underdogs against the Diamondbacks.
  • The Marlins have covered the run line each of their last 10 road games against NL West opponents that held a winning record.
  • The Diamondbacks have failed to cover the run line in each of their last six games as favorites after playing the previous day.
  • The Diamondbacks have trailed after 5 innings in each of their last six night games at Chase Field against NL opponents.
  • The Diamondbacks have trailed after 3 innings in four of their last five games against NL East opponents that held a losing record.

Total Runs Facts

  • Eight of the Marlins’ last nine games have gone OVER the total runs line.
  • Each of the last four games between the Marlins and Diamondbacks at Chase Field have gone OVER the total runs line.
  • There has been no run scored during the first inning in 14 of the Marlins’ last 15 road games against NL opponents.
  • There has been no run scored during the first inning in each of the Diamondbacks’ last seven night games.

Arizona Diamondbacks Player Prop Facts

  • Lars Nootbaar has hit a home run in three of the Diamondbacks’ last four games as favorites against NL opponents.
  • Michael Soroka has recorded five or more strikeouts in six of his seven previous appearances against the Marlins.
  • Nolan Arenado has recorded at least one hit in each of his last nine home appearances against the Marlins.
  • Michael Soroka has recorded a win in four of his last five appearances with his team as a home favorite against NL East opponents.
  • Gabriel Moreno is one of only six players to hit over .300 and have 45+ RBIs this season.

Miami Marlins Player Prop Facts

  • Javier Sanoja has hit a home run in each of the Marlins’ last two road games against opponents that held a winning record.
  • Janson Junk has recorded three or more strikeouts in nine of his 11 previous appearances in night games against NL teams that held a winning record.
  • Javier Sanoja has recorded at least one hit in each of the Marlins’ last 12 night games.
  • Otto Lopez ranks 1st in the league in Hits (180) this season.

Matchup/League Facts

  • The Diamondbacks rank 1st in the league for triples this season (36).
  • The Diamondbacks rank 29th in the league for strikeouts this season (1052).
  • The Marlins rank 2nd in the league for triples this season (35).
  • The Marlins rank T2nd in the league for steals this season (151).

Diamondbacks vs Marlins Prediction

The Marlins just aren’t a backable team these days, as they look like a young team that’s run out of gas. Junk has been hittable this season, and he’s fresh off allowing 8 hits and 8 runs in 3 innings against the Mets. The Diamondbacks are fighting for their playoff lives, and Soroka has been solid this season, especially at home, where he has a 2.73 ERA and a .242 allowed batting average. The price isn’t too crazy. I’ll roll with the Diamondbacks at home on Tuesday night.

Randy Chambers's Free Pick: Arizona Diamondbacks -157

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Randy Chambers

Randy has covered sports betting since 2014 and writes about everything from NFL to WNBA. Follow Randy Chambers on Twitter.

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