X-rays on Herrin's left elbow came back negative following his removal from Wednesday's game against Minnesota, Zack Meisel of The Athletic reports.
Herrin was hit on the elbow by a comebacker in the sixth inning, but he appears to have escaped the incident with nothing more than a bruise. He may be unavailable out of the bullpen for a game or two to recover from any lingering soreness, though an extended absence doesn't seem likely.