Welterweight contender  Ian Machado Garry was backstage following his UFC Qatar decision win over former champion  Belal Muhammad waiting for the post-fight press conference to begin when he and middleweight champion  Khamzat Chimaev had a brief altercation. “I’ll f**k you up, b*tch,” Chimaev said about shoving Machado Garry.  “Dude, that’s just childish. You’re meant to be a champion in this sport