Controversial outfielder Manny Ramirez ended his retirement Monday, signing with the Oakland Athletics. Ramirez famously retired from the Tampa Bay Rays only five games into last season on April 8 after testing positive for a banned substance for the second time, triggering an automatic 50-game suspension. The Dominican Republic native must serve that suspension before becoming eligible to play for Oakland, where he signed a one-year contract worth about $500,000. Entering his 20th Major League Baseball season, Ramirez is 14th all-time with 555 career home runs.