Austin Jackson exits early with back spasms

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Tigers center fielder Austin Jackson left Sunday's game in the bottom of the first inning with lower back spasms. The Tigers announced that he is day-to-day.

Jackson played center field in the top of the first inning and made a catch on a fly ball to record the first out of the game. But he returned to the dugout after the top of the inning clutching his back and walking gingerly. Jackson left the dugout and went to the clubhouse with head athletic trainer Kevin Rand.

Ryan Raburn entered the game in left field and took Jackson's spot as the leadoff hitter. Don Kelly shifted from left field to center field in Jackson's absence.

thats ok. Ca-BOOM!

How exactly do you get back spasms from catching a fly ball