Giolito was removed from Wednesday's game against the Royals due to left hamstring tightness.
Giolito suffered the injury during the third inning Wednesday and was ultimately removed after talking with a trainer and firing a few test pitches. The right-hander will likely be further evaluated in the coming days, but the fact that the White Sox are listing him as day-to-day suggests he may not be forced to miss his next turn through the rotation. Giolito was locked in prior to exiting, racking up five strikeouts through 2.2 hitless innings.