Arizona Diamondbacks vs Texas Rangers Pick – 8/13/2025
The Arizona Diamondbacks and Texas Rangers will conclude their three-game series at Globe Life Field on Wednesday. These teams have split the first two games of this series and both of those games were decided by one run. This matchup features a compelling pitching matchup between former Diamondbacks teammates Zac Gallen and Merrill Kelly. Before the game begins, continue reading to get my Diamondbacks vs Rangers prediction for Wednesday.
Our Diamondbacks vs Rangers Pick
- Pick: Texas Rangers Moneyline
- Confidence: ★★★★☆
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Game Snapshot
- Matchup: Arizona Diamondbacks vs Texas Rangers
- Date & Time: Wednesday, August 13, 2025, 2:35 PM ET
- Starting Pitchers: Zac Gallen (ARI) vs Merrill Kelly (TEX)
- Stadium: Globe Life Field, Arlington, TX
- Broadcast: MLB Network
Key Storylines
Pitching Matchup
Zac Gallen takes the mound for the Diamondbacks. He has had a rough season but has still struck out 130 batters in 139.2 innings. Gallen allowed just one earned run over six innings against the Colorado Rockies in his last start and he will look to get the better of the pitching matchup against his ex-teammate today.
Opposing Gallen is Merrill Kelly. Kelly joined the Rangers following a trade deadline acquisition from the Diamondbacks. He has been a consistent presence in the Rangers’ rotation since joining the team. His experience and familiarity with the Diamondbacks’ lineup could provide the Rangers with a strategic advantage.
Key Players
- Texas Rangers: Merrill Kelly is likely going to have some emotions involved in facing his former team. He will need to stay locked in despite any outside noise to give his team a chance for success.
- Arizona Diamondbacks: Ketel Marte hit a ninth-inning home run to win Tuesday’s game for the Diamondbacks. Marte will be a huge factor in this game as well.
Recent Team Streaks
- The Rangers have lost four of their last five games and they are sliding out of contention in the AL West.
- Arizona has won four of its last five games and they are 6.5 games back of the final NL Wild Card spot.
Best Player Props
| Player | Prop | Analysis |
|---|---|---|
| Zac Gallen | Under 5.5 strikeouts | His struggles this season could mean a shorter leash and fewer strikeout chances. |
| Merrill Kelly | Over 5.5 Strikeouts | His consistency and experience will limit the Diamondbacks’ scoring. |
| Corbin Carroll | Over 0.5 stolen bases | His speed and aggressiveness on the basepaths make this a viable play. |
Betting Trends & H2H
- The season series between these teams is tied 1-1 going into Wednesday’s rubber match.
- These teams will play three more games against each other in September.
Diamondbacks vs Rangers Model Projection
- Score Projection: Diamondbacks 4 – Rangers 5
- Win Probability: Diamondbacks 45%, Rangers 55%
Final Thoughts
In previous years, I’d have probably taken Zac Gallen in a pitching matchup against Merrill Kelly. But Kelly is pitching better than Gallen right now and it’s not particularly close. Arizona’s bullpen is also at a disadvantage in this series when you compare the bullpen ERAs of these teams. I’ll go with the Rangers to get the win both in this game and in this series.
