Adam Greenberg smiles during a news conference before a baseball game between the Marlins and New York Mets in Miami, Tuesday, Oct. 2, 2012. Greenberg was beaned in his debut for the Cubs in 2005. He never made it to the big leagues again. Until now, at 31. The Marlins signed him to a one-day contract and he's to pinch-hit against the Mets. (AP Photo/Alan Diaz)