Texas Rangers vs Arizona Diamondbacks Prediction, Preview and Odds - 09/12/2026

Game Time: 8:10 pm ET, Saturday, September 12, 2026

Venue:  Chase Field, Phoenix, AZ

Where to Watch:  MLB TV

DraftKings:  Moneyline odds:  Rangers +119, Diamondbacks -143; Over/Under:  8.5 runs

Bet365:  Moneyline odds:  Rangers +120, Diamondbacks -145; Over/Under:  8.5 runs

BetMGM:  Moneyline odds:  Rangers +120, Diamondbacks -145; Over/Under:  8.5 runs

Texas Rangers:  72-75 (2nd place, AL West)

Arizona Diamondbacks:  78-69 (3rd place, NL West)

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Texas Rangers:  5-5 last 10

Arizona Diamondbacks:  5-5 last 10

The Rangers are entering this series off a loss and lost their 3-game series against the Seattle Mariners 2-1 in their last series. They enter this game with a 72-75 record overall and have a road record of 32-43. This is the 2nd game of a 3-game series with the Diamondbacks on Saturday with the series opener still to be played on Friday. Their offense ranks 16th in the MLB with a .717 OPS. MacKenzie Gore is their starting pitcher on Friday while Kumar Rocker is making his start in this game on Saturday. He is 5-11 with a 4.61 ERA this season. His team won 2 of their last 3 games this season with him making an appearance. In his last MLB regular season appearance, he allowed 5 ER, 2 HR, and 0 BB with 3 SO on 9 hits through 5 IP against the Tampa Bay Rays.

The Diamondbacks are entering this series off a loss and won their 3-game series against the Kansas City Royals 2-1 in their last series. They enter this game with a 78-69 record overall and have a home record of 41-31. This is the 2nd game of a 3-game series with the Rangers on Saturday with the 1st game of this series still to be played on Friday. Their offense ranks 22nd in the MLB with a .707 OPS. Merrill Kelly is their starting pitcher on Friday while Brandon Pfaadt is making his start in this game on Saturday. He is 7-2 with a 3.53 ERA this season. His team won 4 of their last 5 games this season with him making an appearance. In his last MLB regular season start, he allowed 3 earned runs, 0 homers, and 2 walks with 4 strikeouts on 7 hits through 6.1 innings pitched against the Houston Astros.

The current betting odds have the Diamondbacks listed as a favorite in this game according to Draftkings Sportsbook. The Rangers haven't looked great in their games this season with their 72-75 record overall, but that record has them right near the top of the AL West. They haven't been a great road team either with their 32-43 road record this year. Meanwhile, the Diamondbacks have looked good in their games this season with their 78-69 record overall which has them right in the middle of the NL West. They have looked good in their own ballpark too with their 41-31 home record this season. Neither team has looked great lately with both being 5-5 in their last 10 games respectively, but the Diamondbacks are going to have the better pitching matchup here. The Diamondbacks are going with Pfaadt in this one and he has looked good this season. He is 7-2 with a 3.53 ERA this season and he hasn't been giving up many runs all year. He did give up 3 earned runs in his last start, but that hasn't been a common theme for him and the team has still been having a ton of success with him lately, winning 4 of their last 5 games with him starting. The Rangers are going with Rocker in this one and he hasn't looked great this season. He is 5-11 with a 4.61 ERA and he has been really up and down all season. The team has won 2 of their last 3 games with him starting, but that hasn't been the case for a lot of the year and he did give up 5 earned runs in his last start. Neither team has had a great offense this season either and both are fighting for a playoff spot still, so look for the Diamondbacks to have the edge at home with the more reliable starter. The best way to place a bet here is on the Diamondbacks to win this game. 

Rangers Diamondbacks Prediction:  Our MLB Pick for Saturday, September 12, 2026 (8:10 pm ET start time) is Diamondbacks 5 Rangers 1.

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Texas Rangers: 23-26 (-5.3 units) on the moneyline against NL West opponents. 231-240 (-27.3 units) on the moneyline in all games. 98-138 (-38.3 units) on the moneyline in road games. 30-18 UNDER against NL West opponents.

Arizona Diamondbacks: 246-225 (+10.2 units) on the moneyline in all games. 100-86 (+18.3 units) on the moneyline when the total is 8 to 8.5. 180-165 (+15.5 units) on the moneyline vs. good fielding teams - averaging 0.6 errors/game or less. 26-19 UNDER against AL West opponents.

Texas Rangers:  C. Winn (RP) Fifteen Day IL - Shoulder. P. Gray (RP) Fifteen Day IL - Elbow. N. Eovaldi (SP) Fifteen Day IL - Elbow. J. Leiter (SP) Sixty Day IL - Ankle. J. Jung (3B) Ten Day IL - Calf. J. Corniell (SP) Fifteen Day IL - Elbow. K. Higashioka (C) Ten Day IL - Flexor Tendon. J. Beeks (RP) Sixty Day IL - Back. M. Helman (CF) Sixty Day IL - Hand. C. Baumler (RP) Sixty Day IL - Ribs.

Arizona Diamondbacks:  R. Thompson (RP) Sixty Day IL - Back. R. Nelson (SP) Sixty Day IL - Elbow. C. Mena (SP) Sixty Day IL - Shoulder. A. Puk (RP) Sixty Day IL - Elbow. A. Saalfrank (RP) Sixty Day IL - Shoulder.

“He wanted to keep going. Shows you where he’s at, and how tough he is, still throwing 99 mph.” - Skip Schumaker on Jacob deGrom after his team’s loss against the Mariners in their game on Thursday. 

“The difference was their slug at the right time.” - Torey Lovullo after his team’s loss against the Royals in their game on Wednesday. 

Joc Pederson (L) DH

Corey Seager (L) SS

Ezequiel Duran (R) 3B

Brandon Nimmo (L) RF

Wyatt Langford (R) LF

Evan Carter (L) CF

Jake Burger (R) 1B

Nicky Lopez (L) 2B

Danny Jansen (R) C

Ildemaro Vargas (S) 2B

Ketel Marte (S) DH

Geraldo Perdomo (S) SS

Nolan Arenado (R) 3B

Tim Tawa (R) 1B

Lourdes Gurriel Jr. (R) LF

James McCann (R) C

Jordan Lawlar (R) CF

Lars Nootbaar (L) RF

Batting Average:  Logan O'Hoppe (.313)

Hits:  Brandon Nimmo (141)

Home Runs:  Jake Burger (26)

RBI:  Jake Burger (83)

Stolen Bases:  Evan Carter (16)

Wins:  Nathan Eovaldi (10)

Saves:  Jacob Latz (28)

ERA:  Marco Gonzales (1.35)

Batting Average:  Gabriel Moreno (.299)

Hits:  Geraldo Perdomo (127)

Home Runs:  Nolan Arenado (23)

RBI:  Ketel Marte (70)

Stolen Bases:  Corbin Carroll (21)

Wins:  Eduardo Rodriguez (15)

Saves:  Paul Sewald (24)

ERA:  Justin Martinez (0.00)

Managers:

Texas Rangers: Skip Schumaker (1st season)

Arizona Diamondbacks: Torey Lovullo (10th season)