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

Arizona Diamondbacks left-handed pitching prospect Blake Walston (elbow) will have Tommy John surgery, according to manager Torey Lovullo. Walston missed time last year at Triple-A Reno with a ...

Lots of decisions on the table for Arizona Diamondbacks manager Torey Lovullo, and a promising pitcher will need major elbow ...

SCOTTSDALE, Ariz. — Arizona Diamondbacks left-hander Blake Walston will undergo season-ending Tommy John surgery. Diamondbacks manager Torey Lovullo tells reporters it's "terrible news," but ...

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.