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Out · expected back around Feb 1
Walter is one of three Astros starters in Florida rehabbing from Tommy John surgery, though Hayden Wesneski (elbow) and Ronel Blanco (elbow) are further along in their programs after undergoing procedures in May and June of last year, respectively. Both Wesneski and Blanco will have chances at returning from the 60-day injured list late in the season, but since he had his surgery Sept. 23, 2025, Walter isn't a realistic candidate to pitch until 2027. Walter's main focus will be building up toward facing live hitters by the end of the season with the aim of entering spring training with few restrictions, if any.
2025 season (his most recent)
- GP
- 9
- W-L
- 1-3
- ERA
- 3.35
- WHIP
- 0.93
- K
- 52
- IP
- 53.2
Game log
| Date | Opp | Result | Dec | IP | H | ER | BB | K |
|---|---|---|---|---|---|---|---|---|
| Jul 23 | @AZ | W 4-3 | - | 7.0 | 4 | 1 | 1 | 5 |
| Jul 18 | @SEA | L 1-6 | L | 6.0 | 3 | 1 | 1 | 7 |
| Jul 9 | vs CLE | L 2-4 | L | 6.0 | 2 | 2 | 0 | 7 |
| Jul 3 | @COL | L 6-7 | - | 5.0 | 8 | 5 | 0 | 3 |
| Jun 27 | vs CHC | W 7-4 | W | 6.0 | 5 | 1 | 0 | 5 |
| Jun 21 | @LAA | L 1-9 | L | 6.0 | 9 | 7 | 1 | 6 |
| Jun 15 | vs MIN | W 2-1 | - | 6.2 | 6 | 1 | 0 | 9 |
| Jun 8 | @CLE | L 2-4 | - | 6.0 | 6 | 2 | 0 | 5 |
| May 20 | @TB | L 2-3 | - | 5.0 | 3 | 0 | 1 | 5 |
| 2023 season | ||||||||
| Sep 14 | vs NYY | L 5-8 | - | 3.0 | 2 | 0 | 0 | 2 |
| Sep 8 | vs BAL | L 2-11 | - | 1.1 | 3 | 4 | 3 | 0 |
| Sep 1 | @KC | L 2-13 | - | 4.0 | 10 | 7 | 0 | 5 |
| Jul 23 | vs NYM | W 6-1 | - | 1.0 | 0 | 0 | 1 | 0 |
| Jul 15 | @CHC | L 4-10 | - | 2.0 | 6 | 2 | 0 | 3 |
| Jul 8 | vs ATH | W 10-3 | S | 3.0 | 3 | 0 | 0 | 3 |
| Jul 6 | vs TEX | W 10-6 | - | 1.0 | 2 | 0 | 0 | 1 |
| Jul 4 | vs TEX | L 2-6 | - | 1.0 | 0 | 0 | 0 | 0 |
| Jun 22 | @MIN | L 0-6 | - | 6.2 | 6 | 3 | 3 | 2 |
Latest news
The Astros announced Friday that Walter (elbow) is in the midst of a throwing progression at the team's complex in West Palm Beach, Fla., Chandler Rome of The Athletic reports.
Walter is one of three Astros starters in Florida rehabbing from Tommy John surgery, though Hayden Wesneski (elbow) and Ronel Blanco (elbow) are further along in their programs after undergoing procedures in May and June of last year, respectively. Both Wesneski and Blanco will have chances at returning from the 60-day injured list late in the season, but since he had his surgery Sept. 23, 2025, Walter isn't a realistic candidate to pitch until 2027. Walter's main focus will be building up toward facing live hitters by the end of the season with the aim of entering spring training with few restrictions, if any.
RotoWire via ESPN · Jun 4
The Astros placed Walter (elbow) on the 60-day injured list.
Putting Walter on the 60-day IL gives Houston another 40-man roster spot to play with. The lefty will miss the entire 2026 campaign after having Tommy John surgery last September.
RotoWire via ESPN · Mar 25
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ESPN · Dec 1
Walter (elbow) was activated from the 60-day injured list Thursday, Brian McTaggart of MLB.com reports.
This move is procedural as the Astros set their 40-man roster for the offseason. Walter is recovering from Tommy John surgery and will miss the entire 2026 season.
RotoWire via ESPN · Nov 7
Walter (elbow) underwent Tommy John surgery Monday, Chandler Rome of The Athletic reports.
The Astros announced that Walter was slated for elbow surgery a couple of weeks ago, but now that we know he specifically underwent a Tommy John procedure, it's safe to assume the left-hander won't return to a big-league mound until 2027. It's a notable loss for the Astros' rotation, as Walter finished his first season in Houston with a 3.35 ERA and 0.93 WHIP over 53.2 innings spanning nine starts.
RotoWire via ESPN · Sep 23
Walter will undergo surgery on his left elbow this week, Chandler Rome of The Athletic reports.
The specifics on the nature of the procedure aren't clear, but more should be known after the surgery takes place. Walter was terrific this season when healthy for the Astros, collecting a 3.35 ERA and 52:4 K:BB over 53.2 innings covering nine starts. If it's UCL surgery that the 29-year-old needs, he would likely be out until the 2027 season.
RotoWire via ESPN · Sep 9