The official weigh-in of UFC 325 in Sydney experienced one of its most controversial moments when Aaron Tau tried to manipulate the result of the scales during his "weigh-in" prior to the fight against Namsrai Batbayar. Tau initially marked a surprisingly low weight behind a curtain, which raised suspicions among the officials. By re-weighing himself without that coverage, he registered 129 lbs, three pounds over the flyweight limit for a non-title fight, which caused the cancellation of the bout, which was also the final of the Road to UFC 4 tournament in that category. The organization detected the cheating attempt almost instantly and decided to officially withdraw the fight from Saturday's card, generating criticism and questions among fans and analysts about integrity and controls at the weigh-ins.