LaPorta tagged up on a fly ball to left fielder Alex Gordon, whose one-hop throw home beat the runner. Treanor fielded it and was in position for the tag when LaPorta tried to bowl him over. His right shoulder appeared to hit Treanor in the face.
LaPorta was called out by umpire Laz Diaz, while Treanor remained motionless, face down in the dirt. Pitcher Felipe Paulino retrieved the ball, called time, and Royals manager Ned Yost and trainers came out to attend to Treanor.
They wiped blood from the catcher’s face. Treanor walked to the dugout and was replaced by Brayan Pena.