Boxing adviser and promoter
This shadowy ring adviser doesn't speak to reporters; instead he's wielded his enormous influence at HBO and Showtime by dangling the idea that his top fighter, Floyd Mayweather Jr., would sign with or leave them. The result: Haymon's stable has collected millions fighting inferior opposition. The 57-year-old's latest client, rising star Adrien Broner, ensures Haymon's influence will continue.
43 ED O'BANNON
Retired basketball player
[RISING][50 & UNDER]
The 40-year-old former UCLA hoops star is the lead plaintiff in a lawsuit against the NCAA. Narrowly, the suit is based on whether the organization can use athletes' images for commercial purposes; broadly, it's about the whole structure of amateurism. O'Bannon's case could go as far as the Supreme Court; his threshold for settlement may reshape college sports.
44 BARACK OBAMA
[TASTEMAKER][WORLD POWER][HAS NUCLEAR CODES][SOCIAL SAVVY]