White Sox manager Robin Ventura doesn't feel it's anything serious, but estimated the right fielder could miss "a couple of days."
Garcia, though, is hoping to play on Sunday.
"Nothing serious," he said. "Just felt something in the first inning. They think it's a spasm. Hopefully, I'm playing [Sunday]."
John Jackson is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.