Jon Jones has almost certainly just ruined one of the best fight cards in the history of the UFC.
With the UFC 200 event just days away, the American fighter has been pulled from the bout because of a suspected doping violation.
The USADA informed Jones and the UFC of the violation on Wednesday and UFC president Dana White announced the move during a news conference at the MGM Grand last night, shocking everyone.
SIGN UP NOW
Want to become a GMS writer? Sign up now and submit a 250-word test article: http://gms.to/haveyoursay4
Jones tested positive for a banned substance in an out-of-competition sample taken in June by the USADA. That is according to Jeff Novitzky, the UFC's vice president of athlete health and performance.
Novitzky went on to add that with so little time before the fight, the UFC wouldn't have been able to complete a full review or test Jones' B sample in time, so the fight had to be removed from the card entirely.
"It is important to note that under the UFC anti-doping policy, there's a full, fair legal review process that is afforded to all athletes before any sanctions are imposed," Novitzky said.
"Therefore the fight has been removed from the fight card."
A defeated-looking Dana White confirmed that if this does come back as Jones failing the test then he could be set for a two-year ban from all competition.
"This sucks," said White. "I don't know what to say. It sucks. It's unfortunate."
This was supposed to be the biggest event in UFC history. Unless the UFC can find a top quality replacement for Jones, it is turning into something of a nightmare.