FILE - In this Sept. 19, 2009, file photo, boxier Floyd Mayweather Jr., right, works out at his gym as his father, Floyd Mayweather Sr., left, looks on in Las Vegas. He taught his son to throw punches before he could walk, and he'll be in his corner for the biggest fight of his life against Manny Pacquiao on May 2. The relationship betwee Mayweather Sr. and his son, though, hasn't always been good. (AP Photo/Isaac Brekken, File0