The Tigers led 2-1 at the time, in a game Chicago needed to win to force a tiebreaker with Minnesota for the AL Central title. Armando Galarraga, Detroit's best starter this season, relieved Garcia and immediately threw two wild pitches that let the tying run score.
Garcia, a former ace for the White Sox, had surgery on his right shoulder in August 2007. He missed most of this season because signing with Detroit.
After Garcia threw a pitch to Jermaine Dye while DeWayne Wise was stealing second, a Tigers trainer went to the mound. Garcia grabbed his neck near his right shoulder and left the game.
Garcia had pitched well against his former team before he was hurt, allowing just two hits into the sixth.