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Blake Walston
P
AZ
2026 season
- GP
- 2
- W-L
- 1-0
- ERA
- 3.00
- WHIP
- 1.33
- K
- 2
- IP
- 3.0
Game log
| Date | Opp | Result | Dec | IP | H | ER | BB | K |
|---|---|---|---|---|---|---|---|---|
| Sep 8 | @KC | W 5-3 | W | 2.0 | 0 | 0 | 3 | 2 |
| Sep 1 | vs PHI | L 1-7 | - | 1.0 | 1 | 1 | 0 | 0 |
| 2024 season | ||||||||
| Sep 24 | vs SF | L 0-11 | - | 2.1 | 4 | 3 | 0 | 1 |
| Sep 23 | vs SF | L 3-6 | - | 1.0 | 0 | 0 | 0 | 1 |
| Sep 17 | @COL | L 2-8 | - | 2.0 | 3 | 2 | 1 | 4 |
| Sep 15 | vs MIL | W 11-10 | W | 0.1 | 0 | 0 | 0 | 1 |
| Jun 4 | vs SF | W 8-5 | - | 4.1 | 2 | 2 | 4 | 2 |
| May 26 | vs MIA | L 1-3 | - | 4.2 | 4 | 0 | 1 | 4 |
| May 1 | vs LAD | L 0-8 | - | 3.2 | 3 | 2 | 4 | 5 |
Latest news
The Diamondbacks optioned Walston to Triple-A Reno on Wednesday.
Walston picked up the win in Tuesday's extra-innings victory over the Royals but finds himself back in the minors a day later. The win was the lefty's first in the majors since 2024, as he missed the 2025 campaign following Tommy John surgery.
RotoWire via ESPN · Sep 9
Walston (1-0) earned the win Tuesday against the Royals after allowing one unearned run while walking three and striking out two over two innings in relief.
Walston entered for the 10th with Arizona ahead 3-2 and surrendered the tying run, though it was unearned due to the automatic runner. The left-hander returned for the 11th after the Diamondbacks regained the lead and closed out the 5-3 victory with a scoreless frame. This was Walston's second appearance following Tommy John surgery, as he was activated Sept. 1.
RotoWire via ESPN · Sep 9
The Diamondbacks reinstated Walston (elbow) from the 60-day injured list Tuesday.
Walston has been on the injured list all season while recovering from a Tommy John procedure he underwent last spring. He was cleared to begin a rehab assignment Aug. 4 and has since given up four earned runs in 7.2 innings at Triple-A Reno. The 25-year-old lefty will join the D-backs' bullpen as a long reliever now that he's fully healthy, though he could still be developed as a starter in the future. Ryan Thompson (back) was placed on the 60-day IL in a corresponding move.
RotoWire via ESPN · Sep 1
Walston (elbow) struck out two and allowed one hit in a scoreless inning during a rehab appearance Wednesday with Triple-A Reno.
Walston had been a full-time starter throughout his minor-league career and started in two of his seven appearances during his debut season with the Diamondbacks in 2024 before undergoing Tommy John surgery last spring. While the Diamondbacks may not have closed the door on developing the 25-year-old as a starter, it appears he'll be preparing for a multi-inning relief role for the remainder of the season once he returns from the 60-day injured list. He's been used out of the bullpen for each of his first three rehab appearances with Reno, covering four innings while striking out three and allowing one unearned run on two hits and no walks.
RotoWire via ESPN · Aug 13
Walston (elbow) will begin a rehab assignment Tuesday, Jack Sommers of SI.com reports.
Walston is finally rehab to pitch in official games following a long rehab from Tommy John surgery. The left-hander has a chance to contribute for the Diamondbacks in September, though he's not a given to rejoin the major-league roster once his rehab assignment concludes.
RotoWire via ESPN · Aug 4
Walston (elbow) paused his rehab program earlier in the season, but he was expected to start building back up around the middle of May, MLB.com reports.
Arizona hasn't provided any concrete information regarding where Walston currently stands in the rehab process, but he's not expected to be a realistic candidate to return from the 60-day injured list until after the All-Star break. The 24-year-old left-hander hasn't made an appearance in an official game since spring training of last year after undergoing Tommy John surgery March 26, 2025.
RotoWire via ESPN · Jun 1