Alvarez left Sunday's game against the Angels with a right knee contusion, Chandler Rome of The Athletic reports.
Alvarez appears to have avoided a serious injury, but with his history of knee trouble, the Astros may sit him down for at least a day or two to be safe. The injury occurred when Alvarez slid into second base on a double in the bottom of the third inning. Mauricio Dubon pinch ran for Alvarez and stayed in the game in left field.