Blake Walston

The Diamondbacks have moved Blake Walston (elbow) to the 60-day IL.

Fantasy Impact

Walston is out for the season due to a sprained UCL that will require Tommy John surgery. The move opens up a spot for Garrett Hampson to join the Diamondbacks' 40-man roster.

Diamondbacks manager Torey Lovullo announced Friday that Blake Walston will undergo Tommy John surgery after an elbow issue sidelined him last season, per team updates.

Fantasy Impact

Walston, a starter from Triple-A Reno, faces a mid-2026 return due to his full UCL repair. Dynasty league managers should note his long absence, dimming his near-term fantasy outlook with Arizona.

The Diamondbacks have optioned Blake Walston to Triple-A Reno.

Fantasy Impact

Walston will head back to the minor leagues after struggling out of the bullpen for Arizona. Ryne Nelson and Alek Thomas were added to the roster in a corresponding move.

The Diamondbacks have activated Blake Walston (elbow) from the IL and optioned him to Triple-A Reno.

Fantasy Impact

Walston will head to the minors as the Diamondbacks currently do not have a spot open in their rotation. He will likely remain the next man up should Arizona suffer another injury to their rotation.

The Diamondbacks have placed Blake Walston on the 15-day IL with left elbow inflammation.

Fantasy Impact

Walston has made two starts since joining the Diamondbacks rotation in late May. Humberto Castellanos has been recalled and will likely take Walston’s spot in the rotation.