OAKLAND, CA - MAY 11: Yoenis Cespedes #52 of the Oakland Athletics sits in the clubhouse with his bat for Breast Cancer Awareness Day, engraved with his mothers name Estela Milames, prior to game against the Washington Nationals at O.co Coliseum on May 11, 2014 in Oakland, California. The Athletics defeated the Nationals 9-1. (Photo by Michael Zagaris/Oakland Athletics/Getty Images)