Astros manager Joe Espada said after Sunday's 9-8 loss to the Angels that Alvarez will undergo imaging on his right knee, Matt Kawahara of the Houston Chronicle reports.
Alvarez injured his right knee while sliding into second base in the bottom of the third inning, and he left the game after being visited by trainers. The initial diagnosis was a knee contusion, but the results of the imaging will determine Alvarez's availability for the final week of the regular season.