Brock Lesnar's UFC comeback could stall after one fight after the former heavyweight champion was flagged for a potential anti-doping violation.
The UFC said on Friday that it was notified by the USADA (United States Anti-Doping Agency) of a potential anti-doping policy violation stemming from an out-of-competition sample collection on June 28.
USADA - Substance - Failure
The USADA did not announce what substance may have caused the failure.
The UFC said USADA received the test results on Thursday, five days after Lesnar returned from a four-and-a-half year lay-off and beat Mark Hunt in the co-main event...