PITTSBURGH, PA -- The Pittsburgh Pirates placed outfielder Alex Presley on the 7-day disabled list retroactive to July 4 with a concussion and recalled infielder Jordy Mercer from Triple-A Indianapolis.

Presley suffered the injury in the first inning on Tuesday after a diving play. With two outs, Jed Lowrie hit a single into shallow right field. Presley dove attempting to make the catch, and suffered what Manager Clint Hurdle described as 'a whiplash type scenario.' He was removed from the game in the fifth inning after talking to the training staff about not feeling right. After undergoing tests on Wednesday, the Pirates held Presley out of the lineup against the Astros.

Mercer, 25, made his Major League debut with Pittsburgh on May 29 and struck out in a pinch-hit at-bat. He appear...

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