Actor Bill Murray autographed the ball he used for the ceremonial first pitch on Thursday and
flipped it to Ryan Dempster for the game. Apparently, Dempster didn’t know it had been signed, “
Good luck, Ryan.” As it turns out, the Nationals’
Ian Desmond singled off the first pitch from Dempster and wanted the ball as a souvenir from Opening Day. It wasn’t until he got back to the dugout and saw the ball and the autograph that he realized what he had.http://muskat.mlblogs.com/2012/04/05/45-opening-day-souvenir/