Morrow has been shut down due to renewed shoulder fatigue, AJ Cassavell of MLB.com reports.

EDGE Analysis

The last time Morrow pitched in a competitive environment was May 9, when he tossed six innings of three-run ball for Triple-A El Paso. Morrow experienced several setbacks with his shoulder last year before ultimately undergoing surgery. Still, it sounds like the Padres aren't willing to cut ties just yet, as there's talk that the two sides could push back his June 1 opt-out date.