Washington Nationals star Bryce Harper didn't get off to a very good start to the 2014 season. After recording a walk in his first at-bat, he took a scary knee to the head while sliding into second base on a ground ball. Fortunately for Harper and the Nats, he stayed in the game.
(GIF via @CorkGaines)
But he was later bested by a beach ball.
(Video via Rich MacLeod)
UPDATE: Nats manager Matt Williams said Harper passed all concussion tests.
#Nats Manager Matt Williams said Bryce Harper passed all concussion tests he was administered. He was cleared to stay in the game.
— Washington Nationals (@Nationals) March 31, 2014