Red Sox shortstop Trevor Story exited Boston's game against the Los Angeles Angels in the fourth inning Friday night after injuring his left shoulder on a backhand dive to stop a hit by Mike Trout.

Story and the Red Sox won't know the severity of his injury until he undergoes an MRI exam Saturday, but Story was somber in the clubhouse after Boston's 8-6 victory. He said he wasn't even certain whether his shoulder had dislocated after he landed on it with most of his body weight.