Reports: Brock Lesnar tests positive for same substance as Jon Jones at UFC 200

Former UFC heavyweight champion Brock Lesnar has tested positive for an anti-estrogen agent called hydroxy-clomiphene, according to multiple reports.

It was the same substance that triggered a positive test result in interim light heavyweight champ Jon Jones prior to UFC 200, leading to his being pulled from the main event. Lesnar's sample, taken on June 28, did not return the positive result until after his bout with Mark Hunt, allowing Lesnar to still fight at UFC 200 earlier this month. Lesnar then failed a second drug test on the day of his bout with Hunt, which was revealed this week.

Jones' test, from June 16, was revealed the Wednesday of fight week, scrapping his scheduled title fight against Daniel Cormier. Jones and Lesnar are both facing a two-year ban of the positive tests. Jones has hired an anti-doping lawyer to help win his case with USADA.

Lesnar had released just one statement since his first positive result a week ago: "We will get to the bottom of this," Lesnar said via the Associated Press.

Lesnar won by unanimous decision against Hunt and pocketed $2.5 million for his efforts, a record in the UFC. Since then, Hunt has called for Lesnar to surrender half of his purse or for the UFC to release him from the organization.

Lesnar is still scheduled to perform at WWE's SummerSlam on Aug. 21 in a bout against Randy Orton.

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