Khabib's manager makes surprising claim

Ali Abdelaziz says Kamaru Usman is the greatest fighter he has ever been associated with

Dominance MMA chief Ali Abdelaziz has managed the careers of several dominant UFC champions but says that one of them stands above the rest: Kamaru Usman.

'The Nigerian Nightmare' Usman takes on his latest UFC welterweight title defense late on Saturday in Salt Lake City, Utah when he fights the seven-y