Trout, who won his second straight All-Star Game MVP award a week ago, said he felt an aching discomfort while walking after waking up Tuesday. The slugger went 2 for 7 with a home run in Monday's day-night doubleheader sweep of Boston.
Trout said he felt ''a lot better'' after getting some treatment at the ballpark.
The reigning AL MVP was hitting .307 with 28 home runs and 57 RBIs. He was the only player to appear in each of the Angels' first 92 games.