Miami Marlins vs Arizona Diamondbacks Prediction, 9/15/2026 MLB Picks, Best Bets & Odds

Game: Miami Marlins vs Arizona Diamondbacks

Date: Tuesday, September 15, 2026

Location: Chase Field in Phoenix, AZ

TV: DBACKS.TV

Odds/Point Spread: Miami (+106) Arizona (-128)

The Arizona Diamondbacks (79-71) are welcoming the Miami Marlins (74-76) at Chase Field on Tuesday. The moneyline on this contest has the Marlins at +106 while the Diamondbacks open at -128. The over/under is set at 8. The starting pitchers are Janson Junk and Zac Gallen.

The Marlins have earned 231 doubles as a squad and have smacked 153 balls out of the stadium. Miami has a slugging rate of .401 and have struck out 1,235 times, while drawing a walk on 515 occasions. As a squad, the Miami Marlins are compiling 4.4 runs per contest, which is 17th in MLB. They have recorded 637 runs batted in and 1,245 base knocks so far this season, while their batting average comes in at .249. They have accumulated 666 runs scored while having a team on-base percentage of .327.

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They have accumulated a K/BB ratio of 2.31 and their pitching staff holds a WHIP of 1.28. Marlins pitchers have given up 153 home runs and also 660 runs in total (12th in the league). Miami has allowed 1,166 base knocks (8.0 per 9 innings) and also 601 earned runs. The Marlins have an ERA of 4.10 for the year (13th in the league), and the staff has struck out 1,205 hitters. Their pitching staff has walked 521 hitters and their FIP sits at 4.14 as a unit so far this season.

The Marlins bullpen have earned a save rate of 62.7% and have stepped onto the mound in 137 save situations. They have earned 32 saves over the course of the season and have not converted 19 of their 51 save opportunities. The relievers have inherited 191 base runners over the course of the season with 27.7% of those players crossing home plate. Marlins relief pitchers have stepped onto the hill with runners on 133 times in addition to having 140 appearances in high leverage situations. The Marlins have dispatched 495 relievers to the mound for the season. The relief pitchers have a total of 84 holds over the course of the season (11th in the league).

The Marlins have turned 70.7% of balls in play into outs in their 11,868 innings on the field, which has them sitting at 10th in MLB. The Miami Marlins have 3,956 putouts at this point in the season, as well as 1,259 assists and 92 errors. Their fielding percentage sits at .983 which puts them in 26th in baseball, and they have turned 107 double plays.

Junk has taken the hill for 261 frames and has totaled 185 strikeouts so far in his pro baseball career. His ERA is 4.72 (137 earned runs allowed) and he has a WHIP of 1.314. He has surrendered 289 base hits (10.0 hits per 9 innings) and has 54 walks. Junk (13-16 career mark) has a FIP of 4.65 while he has faced 1,108 hitters in the major leagues.

The Arizona Diamondbacks have earned a team on-base percentage of .315 and a team batting average of .243 so far this year. They have been rung up on 1,095 occasions (28th in baseball) and have recorded 1,221 base knocks. Arizona has a total of 147 HRs on the campaign and 635 RBIs. The Diamondbacks have a team SLG% of .395 and they earn 4.43 runs per contest (18th in MLB). They have recorded 251 doubles, while walking 499 times as well as recording 665 runs.

The Arizona pitching staff have yielded 663 runs for the year while holding an ERA of 4.09 (606 earned runs yielded). They have given up 167 home runs and they allow 4.47 runs per 9 innings (13th in the league). The Diamondbacks have a team WHIP of 1.278 with a FIP of 4.32 as a squad for the season. Their strikeout to walk ratio comes in at 7.00 (1,039 strikeouts vs 447 bases on balls). They have a ranking of 19th in baseball as a staff in total hits allowed with 1,258.

They are ranked 11th in baseball with a save percentage of 68.5%, and they have dispatched 504 relievers to the hill on the campaign. Their relievers have stepped onto the mound 161 times in high leverage situations in addition to 135 occasions with runners on. Sitting with 134 save situations, the Diamondbacks have tallied 79 holds and also 17 blown saves. Arizona has had bullpen pitchers take the mound in 54 save opportunities and they have walked away with 37 saves. Arizona relief pitchers hold an inherited score rate of 26.9% of 197 inherited base runners.

Out of their 12,006 innings on the field, the Diamondbacks have earned a defensive efficiency of 71.3% (7th in MLB). The Arizona Diamondbacks have turned 129 double plays and have earned a fielding percentage of .989 (2nd in the majors). The Diamondbacks have recorded 1,299 assists, 58 errors and have notched a total of 4,002 putouts on the campaign.

Gallen (69-61 career win-loss mark) is the owner of a 3.83 earned run average and has allowed 7.9 hits per 9 innings. He has a strikeout to walk ratio of 3.14 and he has gone up against 4,597 batters during his pro baseball career. He has conceded 471 earned runs while holding a WHIP of 1.197 and having a FIP of 3.8. So far in his career, Gallen has surrendered 969 base knocks while he has tallied 1,122 K's in 1,108 frames.

Who will win tonight's MLB game against the spread or moneyline?

Josh Schonwald's Pick: Take Miami (+106)

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