The Chicago White Sox have placed Chris Sale on the disabled list with a strained flexor muscle in his throwing arm.
Charlie Leesman will be called up from Triple-A Charlotte to start Tuesday's game versus the Detroit Tigers.
Forearm discomfort is often an indicator of damage to the ulnar collateral ligament, and subsequent Tommy John surgery in a worst-case scenario, but Sale underwent an MRI that showed no ligament damage.
Sale is 3-0 with a 2.30 ERA, 0.84 WHIP and 29 strikeouts in 27.1 innings (four starts).