#5 Brock Lesnar
Being the biggest draw in pro wrestling and MMA is no mean feat. Brock Lesnar has raked in the moolah and the money for two of the biggest promotions in the world despite both selling different products altogether.
After beating Mark Hunk at 200 in July 2016 and subsequently failing a drug test, the Beast Incarnate was handed a 1-year ban by the USADA, making him eligible to return to the Octagon after July 2017. In an unforeseen event, he reportedly notified the UFC of his retirement in February 2017.
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It's 2018 and the current WWE Universal Champion is expected to drop the title to Roman Reigns at WrestleMania 34, thus ending a lengthy 330+ day reign. Sadly for the WWE, the former UFC Heavyweight Champion wants to improve on his 5-3-1 MMA record and would reportedly not be renewing his WWE contract, which expires in April.
And if the photo below posted by Dana White is any indication, then his rematch against Reigns could be the last we see of the Beast inside a WWE ring for the time to come:
If that wasn't enough, Paul Heyman's comments on his client's future pretty much confirm the inevitable:
Jon Jones vs. Brock Lesnar in who manages to avoid a USADA suspension could see the light of the day now!