Red Sox fans will have to get up early to watch the World Series champions start their title defense. The major league season opener against the Athletics in Tokyo will start at 6:07 a.m. EDT on March 25, the Red Sox said Wednesday. The teams also play the following day. Ahead of opening day, the Red Sox play the Central League's Hanshin Tigers at Tokyo Dome on March 22 (11:07 p.m. EDT March 21) and the Yomiuri Giants on March 23 (6:07 a.m.). Boston also finalized its $550,000, one-year contract with backup catcher Doug Mirabelli.