The Guardians placed Herrin on the 15-day injured list Thursday due to a left elbow contusion.
Herrin was lifted from his most recent relief appearance in Wednesday's 6-5 loss to the Twins after being hit in the left elbow by a comebacker. X-rays came back negative, but Herrin's injury was deemed serious enough to keep him on the shelf through June 23. Herrin has appeared in 41 games out of the bullpen this season, logging a 3.06 ERA, 1.30 WHIP and 27:19 K:BB across 32.1 innings.