The Guardians optioned Cantillo to Triple-A Columbus on Sunday.

EDGE Analysis

Tim Herrin was promoted to replace Cantillo on the active roster, but the Guardians will likely wait until next week before announcing a new fifth starter. Cantillo owns a respectable 3.93 ERA over 66.1 innings in the majors this season, but he had issued at least four walks in three of his five starts since the All-Star break. The young lefty may need to iron out his control issues at Triple-A before he gets another look in the big-league rotation.