Boston Red Sox first baseman Triston Casas was placed on the 10-day injured list with a ruptured left patellar tendon on Saturday.
Casas left Friday night's game against the visiting Minnesota Twins on a stretcher after suffering the injury in the bottom of the second inning.
He beat out a check-swing tapper that Twins pitcher Joe Ryan misplayed for an error. After stepping hard on top of the first base bag, his left foot hit the foot of Minnesota first baseman Ty France and he fell hard on his left knee.