Astros outfielder J.D. Martinez was forced to leave Friday's series opener against the Indians with a right knee sprain. Martinez's right knee buckled when he attempted to check his swing on a pitch from Brett Myers in the fourth inning.
He immediately dropped to the ground and was taken off the field by team trainers.
Martinez, who was replaced in the lineup by Brandon Barnes, had a two-run home run off Myers in his first at-bat against the right-hander.
He is batting .244 and is day-to-day.