Floyd Mayweather Jr defends choice of Berto as his final foe (The Associated Press)

Floyd Mayweather Jr. began promoting his final fight by doing what he does best. The pound-for-pound king of boxing insisted Andre Berto is a worthy opponent for his grand farewell when they made a joint appearance in downtown Los Angeles on Thursday, just over five weeks before they’ll meet at the MGM Grand Garden Arena in Las Vegas on Sept. 12. ”I don’t know why, but I’m just training a lot harder for this fight,” Mayweather said.