The brother of a boxer who had just been awarded a technical knockout punched the trainer of a rival fighter during a chaotic melee in the ring following a televised bout at the Sydney Arena. Michael Zerafa received the TKO win on Wednesday night after his opponent Tommy Browne quit after the first round of the catchweight bout due to a biceps injury. Zerafa wasn’t happy with his rival retiring, and appeared to yell “you quit” when Browne remained on his stool after the second round was set to start.