54. Floyd Mayweather Jr. ($44 million)

Athlete

The boxer says he is retired after defeating Andre Berto in September to run his record to 49-0. The world's highest-paid athlete three of the previous four years banked $32 million for the Berto fight to bring his career earnings to $700 million since turning pro in 1996. Money Mayweather earned $12 million outside the ring over the last 12 months through more than a dozen personal appearances during his "World Tour" and profits from his TMT line of merchandise.