ecords suggest Mayweather Jr. owes IRS Mayweather fight rescheduled to Sept. 19 Mayweather fight postponed Mayweather proud to be an American Mayweather-Pacquiao seems inevitable Mayweather boasts boxing is back When comparisons are drawn between Floyd Mayweather Jr.???s hiatus from boxing and other memorable comebacks in the sport, names such as Muhammad Ali and George Foreman usually come up rig