With a net worth between US$300 million and US$650 million, Floyd Mayweather Jr has been one of the wealthiest boxers in the world. In particular, he has also been named as one of the highest paid athletes in both Sports Illustrated and Forbes. As a professional boxer, Floyd Mayweather Jr had no defeat and was a five-division world champion. In addition, he also hold 12 world titles as well as the lineal championship in 4 different weight classes. In fact, Floyd Mayweather Jr is widely known as the best pound for pound boxer in the world for two times within a duration of ten years. Throughout his professional boxer career, Floyd Mayweather Jr has earned more than US$1 billion in pay-per-view revenue, surpassing the likes of Mike Tyson, Oscar De La Hoya, Lennox Lewis, and so on.