The Kiwi heavyweight was due to headline the event against Poland's Marcin Tybura but was replaced on Wednesday by former champion Fabricio Werdum after Hunt confessed to slurring his words and losing his memory in a recent article. The 43 year-old feared slugger has gone 3-1, with 1 no contest, in his last five bouts (the no-contest was Hunt's aforementioned bout with Lesnar).
"UFC mentioned they didn't feel comfortable because of the statements he made still and would like more tests done so Mark wasn't able to go forward with the fight in Sydney, unfortunately".
While Hunt has fought twice since filing the lawsuit with bouts against Alistair Overeem and Derrick Lewis, he still believes this altercation stems from the pending litigation rather than concern over his health and well being.
It's another chapter in a tumultuous 12 months for the "Super Samoan", who's now embroiled in a lawsuit with his employers regarding his bout with Brock Lesnar in July 2016.
Hunt later added two follow-up posts via Instagram, in which he insisted that he was misquoted in the Players Voice piece and that doctors cleared him to fight just two days ago. "I've still got my senses about me and I know what's right and wrong, which is the main thing", Hunt wrote in the story.
'Sometimes I don't sleep well. Despite that, he's been a longtime critic of the UFC's business and an advocate for increased fighter pay.
'The truth is the legal case I have filed has caused me to be withdrawn.
Hunt filed a civil lawsuit against the UFC in January after Lesnar failed two doping tests following their bout previous year.
The Sydney-based slugger revealed in the article that he was starting to "stutter and slur my words" and would forget something he would do the day before. Athlete health and safety is of the utmost importance to the organization and it would never knowingly schedule an athlete complaining of health issues for a fight. "The organisation will require that Hunt undergo further testing and evaluations prior to competing in any future UFC bout".
Hunt's relationship with the UFC has been strained in recent times as a result of the failed out-of-competition drug test taken by his UFC 200 opponent Brock Lesnar, following his mauling at the hands of the WWE superstar previous year.