Espinoza, 43, has turned Showtime into a boxing force by leveraging his old position at Golden Boy Promotions, where he was lead counsel before taking over at the network in 2011. Since then he has poached Amir Khan, Danny Garcia and Victor Ortiz from HBO, and last month made his biggest heist, signing HBO's Floyd Mayweather Jr. to a six-fight deal.
50 MICHAEL JORDAN
[TEAM/LEAGUE OWNER][TASTEMAKER][WORLD POWER][COMMERCE][G.O.A.T.][50 & UNDER]
Never mind his majority ownership in an NBA franchise or his enduring commercial appeal. (His Q rating, top among sports stars, is 43; Peyton Manning is next at 32.) The Jordan Brand grew an estimated 25% in 2012, generating more in basketball shoe sales than the rest of Nike. The eponym's take in royalties? Some $60 million. At 50, MJ is driving the lane toward billionaire status.