Jon Jones out of UFC 200 for potential doping violation

Jon Jones has been pulled from UFC 200 for a potential violation of the anti-doping policy, the UFC announced in an official statement on Wednesday.

A bout between Brock Lesnar and Mark Hunt will now become the main event on Saturday's card and will still be a three-round fight. Jones was set to take on Daniel Cormier for the light heavyweight title, a rematch from UFC 182 when Jones handed Cormier his first career loss.

UFC president Dana White announced the news at an impromptu press conference Wednesday, saying the USADA flagged Jones during a June 16 out-of-compettion test.

Related: Jon Jones' manager denies doping allegations

Jones has the right to appeal, but could face a two-year suspension if it's confirmed he violated the policy, according to White.

White said he hopes to keep Jones' opponent Cormier on the card, but admitted the news is devastating "in every possible way it could be."

Cormier echoed those sentiments when addressing the media during a press conference.

According to MMA Fighting's Ariel Helwani, Gegard Mousasi has offered to step up and take on Cormier at 205 pounds in a five-round fight. Mousasi is the eighth ranked middleweight in the UFC, although he is also a former Strikeforce light heavyweight champion. Recently crowned middleweight champ Michael Bisping also threw his hat into the ring as a possible Cormier opponent.

The UFC's No. 1 pound-for-pound fighter Jones has faced myriad issues outside the Octagon in the past few years. After testing positive for cocaine in 2014 he was fined $25,000 but not prevented from facing Cormier at UFC 182. He was stripped of the light heavyweight title in 2015 after a hit-and-run incident and suspended indefinitely.

Jones returned to fight Ovince Saint Preux in April, a fight that was scheduled to be a rematch with Cormier but was altered after "DC" suffered a foot injury.