Dana White’s Zuffa Boxing is quickly becoming the hottest promotion in the game. This week, they announced the signing of British star Conor Benn (24-1, 14 KOs), reportedly in a deal worth $15 million. Benn joins a growing roster that already includes IBF Cruiserweight champion Jai Opetaia, former featherweight champion Mark Magsayo, Shane Mosley Jr., and Feargal McCrory — 93 fighters and counting. Zuffa has an event planned for May 10 and is building fast.