Kamaru Usman: Nate Diaz No Longer 'World-Class Fighter,' Shouldn't Compete for UFC Title Kamaru Usman believes Nate Diaz is not qualified to compete for a UFC title anymore. Despite Diaz suggesting a rematch with either Jake Paul or UFC welterweight champion Leon Edwards after his boxing win against Jorge Masvidal, Usman disagrees. #NateDiaz #KamaruUsman #NickDiaz On his Pound 4 Pound podcast, Usman argued that Diaz should not be in the running for a legitimate title shot at this point in his career. "Nate Diaz is at the tail end of his career," Usman said. "He has made a great name for himself and still draws attention, but suggesting he can compete with world-class UFC fighters now is absurd." Usman responded to co-host Henry Cejudo's question about Diaz's contender status by firmly stating that Diaz is no longer at that level. "No," Usman said. "He can still fight, but he's not a world-class fighter anymore. Putting him against top fighters like Shavkat Rakhmonov, myself, or