Article Photos: Former Oklahoma State player Jordy Mercer proving his worth with the Pittsburgh Pirates 1/2

Pittsburgh Pirates shortstop Jordy Mercer (10) warms up on-deck at PNC Park during a baseball game against the Milwaukee Brewers in Pittsburgh, Wednesday, May 15, 2013. The Pirates won 3-1. (AP Photo/Gene J. Puskar) ORG XMIT: PAGP120