Texas Rangers rookie pitcher Robbie Ross was caught warming up in the bullpen while wearing the wrong colored jersey during Thursday night's game at Camden Yards against the Baltimore Orioles.
Ross was wearing his grey road jersey while the rest of the Rangers were wearing their blue road jerseys. Eventually Ross caught on and switched to the blue jersey, and he clearly appreciated the joke as he couldn't wipe the smile off his face.
Ross was likely told to wear the grey jersey as a form of rookie hazing by his teammates. Last month, Ross had to walk to the bullpen at Fenway Park dressed as a cowboy.
UPDATE: According to the Dallas Morning News, this was apparently a complete goof on Ross' part and not rookie hazing. After a Wednesday rain-out, the Rangers wore their grey road jerseys in the first game of a doubleheader against the Orioles Thursday, then switched to their blue road jerseys for the second game. Apparently Ross didn't get the memo and didn't realize his goof until he started warming up in the bullpen during the night game.
Video via MLB.com.