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 ...

Arizona Diamondbacks left-hander Blake Walston will undergo season-ending Tommy John surgery. Diamondbacks manager Torey ...

Diamondbacks left-hander Blake Walston will undergo Tommy John surgery, manager Torey Lovullo tells Alex Weiner of Arizona ...

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 ...

Arizona Diamondbacks left-handed pitcher Blake Walston will need season-ending Tommy John elbow surgery, manager Torey Lovullo announced before Friday's spring training game against the Cincinnati ...

SCOTTSDALE, Ariz. -- Arizona Diamondbacks left-hander Blake Walston will undergo season-ending Tommy John surgery. Diamondbacks manager Torey Lovullo made the announcement to reporters on Friday.

Walston, 23, went 1-0 with a 4.42 ERA in seven appearances for Arizona last season, including two starts. He also was 3-2 with a 4.85 ERA in 13 starts and one relief appearance with Triple-A Reno.