'Money' defends choice of final foe Berto

Floyd Mayweather Jr. began promoting his final fight by doing what he does best.

Fending off every attack with defense that looks effortless.

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 more than five weeks before they will meet at the MGM Grand Garden Arena in Las Vegas on Sept 12.