There are a lot of moving pieces in Brock Lesnar being flagged for a potential anti-doping violation. As of Saturday afternoon, Brock’s B sample had not yet been tested, something that will happen soon.
As for UFC, if it was a performance-enhancing drug, Lesnar would face a two-year suspension from MMA competitions. He faces a fine in the amount of his purse (which was $2,500,000 for his fight against Mark Hunt at UFC 200). Brock could be banned by athletic commissions that work with Nevada such as those in New York and California. He could also be forced to pay back his fight pay to UFC minus his cut of the pay-per-view revenue.
As for WWE, if Lesnar tested positive for illegal performance-enhancing drugs, he will face the athletic commission ban for two years in any regulated state and would not be able to work for WWE as a result. If Brock’s B sample comes back positive for a legal over the counter substance that is on the USADA’s banned list, he would not face a suspension from the athletic commission. He would still face a two-year UFC suspension but the fines would be much less.
There is absolutely the possibility this could cause Brock Lesnar to miss the already promoted match against Randy Orton at SummerSlam. WWE is closely monitoring the situation, with legal ready to assist should that issue arise. It should be noted Brock passed at least eight tests and one was flagged. It is possible it could have been an over-the-counter substance that caused the positive result but his camp should be monitoring everything put into his body.