Matthew Walston: Everything you need to know

Arizona placed Walston (elbow) on the 60-day injured list Wednesday. Walston will open a second consecutive season on the 60-day injured list after he was shelved throughout the 2025 campaign after undergoing Tommy John surgery March 26 of last year. Per Alex Weiner of ArizonaSports.com, Walston was spotted throwing off flat ground Feb. 10, but it's unclear if the southpaw has progressed to mound work since then. In any case, Walston will be out for at least the first two months of the 2026 campaign while he continues to build back up following surgery.

The Diamondbacks placed Walston (elbow) on the 60-day injured list Sunday. It was announced in mid-March that Walston will require Tommy John surgery, so it was only a matter of time before he was shifted to the 60-day IL. The left-hander will miss the entirety of this season and isn't likely to be back until midseason of the 2026 campaign.

Diamondbacks manager Torey Lovullo said Friday that Walston will undergo Tommy John surgery, Alex Weiner of ArizonaSports.com reports. It's not clear when Walston was injured, but he missed time last season while at Triple-A Reno with an elbow issue. Because he's a starter and it's a full UCL repair, the left-hander will probably be sidelined until around midseason of next year.