Astros-Diamondbacks Game Preview: Walter vs. Pfaadt in Phoenix (July 23, 2025)

Wednesday, July 23rd, 2025

The Houston Astros (59-42, first in the AL West) are set to face the Arizona Diamondbacks (50-52, fourth in the NL West) in an MLB regular season game on Wednesday, July 23, 2025, at 2:40 PM local time. The game will take place in Phoenix, Arizona.

Game Preview: Astros at Diamondbacks

The Houston Astros, currently leading the AL West, are looking to extend their three-game winning streak with a victory over the Arizona Diamondbacks. This marks the third time these two teams will meet this season.

Betting Odds

Astros: -116

Diamondbacks: -104

Over/Under: 8 1/2 runs

Pitching Matchup

The probable starters for this matchup are Brandon Walter for the Houston Astros and Brandon Pfaadt for the Arizona Diamondbacks.

Astros Probable Starter:

Brandon Walter (1-3, 3.66 ERA, 0.96 WHIP, 47 strikeouts)

Diamondbacks Probable Starter:

Brandon Pfaadt (10-6, 4.74 ERA, 1.25 WHIP, 90 strikeouts)

Team Outlook

Houston Astros

The Astros hold a strong 59-42 overall record and a 26-23 record on the road. They have been particularly effective when their offense clicks, boasting a 39-19 record in games where they record at least eight hits.

Arizona Diamondbacks

The Diamondbacks enter the game with a 50-52 overall record and a 26-27 record at home. They rank fifth in the National League with a team batting average of .253.

Key Performers

Astros Top Performers

Jose Altuve has been a key offensive force for the Astros, hitting .280 with 17 home runs, 36 walks, and 53 RBI. Catcher Victor Caratini has been productive recently, going 13 for 36 with a double, a home run, and seven RBI over his last 10 games.

Diamondbacks Top Performers

For the Diamondbacks, Josh Naylor has contributed significantly with 19 doubles, a triple, and 11 home runs. Eugenio Suarez has shown recent power, hitting eight home runs and a double over his past 10 games, during which he is 10 for 36.

Recent Form

Diamondbacks Last 10 Games: 5-5 record, .271 batting average, 4.03 ERA, outscoring opponents by 13 runs.

Astros Last 10 Games: 4-6 record, .245 batting average, 4.25 ERA, outscored by six runs.

Injuries

Arizona Diamondbacks Injuries

Gabriel Moreno (60-Day IL, hand), Jalen Beeks (15-Day IL, back), Shelby Miller (15-Day IL, forearm), Tommy Henry (60-Day IL, elbow), Pavin Smith (10-Day IL, oblique), Ryan Thompson (15-Day IL, scapular strain), Ildemaro Vargas (10-Day IL, foot), Christian Montes De Oca (60-Day IL, elbow), Justin Martinez (60-Day IL, elbow), Cristian Mena (60-Day IL, shoulder), Corbin Burnes (60-Day IL, elbow), A.J. Puk (60-Day IL, elbow), Jordan Montgomery (60-Day IL, elbow), Blake Walston (60-Day IL, elbow).

Houston Astros Injuries

Lance McCullers (15-Day IL, finger), Brendan Rodgers (60-Day IL, oblique), Isaac Paredes (10-Day IL, hamstring), Jake Meyers (10-Day IL, calf), Zach Dezenzo (60-Day IL, hand), Yordan Alvarez (60-Day IL, hand), Luis Guillorme (10-Day IL, hamstring), Jeremy Pena (10-Day IL, rib), Jacob Melton (10-Day IL, ankle), Shawn Dubin (15-Day IL, forearm), Pedro Leon (60-Day IL, knee), Spencer Arrighetti (60-Day IL, thumb), Ronel Blanco (60-Day IL, elbow), Hayden Wesneski (60-Day IL, elbow), Luis Garcia (60-Day IL, elbow), Cristian Javier (60-Day IL, elbow), J.P. France (60-Day IL, shoulder).

In summary

The Houston Astros, leading the AL West with a 59-42 record, face the Arizona Diamondbacks (50-52) on July 23, 2025, in Phoenix. The Astros are on a three-game win streak, while the Diamondbacks look to improve their home record. Pitching will feature Brandon Walter for the Astros and Brandon Pfaadt for the Diamondbacks. Key players include Jose Altuve for Houston and Josh Naylor for Arizona. Betting odds favor the Astros at -116. Both teams have several players on the injured list, impacting their lineup depth.

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