UFC star Brock Lesnar flagged for potential doping violation

Brock Lesnar has been notified of a potential doping violation concerning a drugs test carried out prior to his victorious UFC return.

The former UFC heavyweight champion and WWE star defeated Mark Hunt at last weekend's UFC 200 in Las Vegas on his return to the Octagon after an absence of almost five years.

Lesnar dominates on return

Brock Lesnar defeats Mark Hunt on return at UFC 200

Lesnar, who earned a record $2.5m purse for the points win, has since been informed by the US Anti-Doping Agency that he failed an out-of-competition drug test administered on June 28 and has protested his innocence.

"We'll get to the bottom of this," Lesnar said in a statement to the Associated Press.

Samoan Hunt, however, has furiously hit out and demanded action as Lesnar is now the third UFC opponent he has faced that has been flagged for a doping violation. 

Hunt told MMA Fighting: "The cheaters get a slap on the wrist and walk off. What penalty or deterrent is there to make them think twice? Nothing.

"And the [Nevada Athletic Commission], why should these [expletive] get anything? They are not the ones who had to fight with Lesnar or lose [to him]. I lost."

UFC 200 talking points

Five talking points from UFC 200

Lesnar, who along with the USADA and the UFC have declined to specify the substance of the doping violation, was given permission by the WWE to return to the UFC for one fight and is scheduled to return on SummerSlam against Randy Orton on August 21.

Interim light heavyweight champion Jon Jones was pulled from the main event of UFC 200 four days before his bout when he also received notice of a potential anti-doping violation.

Jones and his camp have denied the allegations and raised concerns about the possibility of a tainted nutritional supplement causing the failure.