Bryce Harper leaves game after pop out with glute tightness

Baseball Bryce Harper's night ended prematurely Wednesday when he was removed from the Nationals'

game against the Cardinals after coasting to first base on a popout in the fourth inning.The Nationals said Harper left because of tightness in his left glute.  MORE: NL MVP watch: It's Bryce Harper's world | Cards look to sweep Nationals WednesdayAfter striking out looking in the first inning, Harper popped out softly to Cardinals second baseball Kolten Wong in his second at-bat. As the ball fluttered through the air, Harper jogged lightly down the first base line. Harper, who did not appear to be injured, snatched his bat up off the ground and trotted into the dugout where he spoke briefly with manager Matt Williams and bench coach Randy Knorr. ​Harper exited down the tunnel toward the clubhouse and was replaced in the lineup by Matt den Dekker. In the ensuing at-bat, Ryan Zimmerman hit his first of two home runs to put the Nationals up 2-1. He homered again in the sixth inning to give the Nationals a 3-2 lead at Busch Stadium. Zimmerman added a go-ahead double in the eighth to lead the Nats to a 4-3 victory.