Houston slugger Yordan Alvarez has a “pretty significant” ankle sprain that is going to keep him out indefinitely, manager Joe Espada said Tuesday. Alvarez was injured when he turned his left ankle at home plate after scoring in the first inning of Houston’s 6-3 win over the Texas Rangers on Monday night. He had imaging done Tuesday. “This is gonna keep him out for a while,” Espada said before the series continued.