When asked about Dustin Pedroia's return from knee surgery, Dave Dombrowski routinely cites May as a possibility. He also almost immediately surfaces Marco Hernandez's name as a logical replacement during Pedroia's absence. But the Red Sox have now signed another second base option that might be worth keeping an eye on in spring training. Mexican League standout Esteban Quiroz has inked a minor-league deal with the Red Sox, with an invitation to big league camp.