5 UFC fighters who destroyed their legacies by taking PEDs

#4. Brock Lesnar

"I'm a jacked white boy - deal with it"; USADA sure did

Most fighters make an impression with their fighting style, just as they should. Some do it with a mic in their hands but don't exactly steamroll their opponents the way they claimed. Then there are those, just the sight of whom can make fans stop whatever they're doing and take notice. Brock Lesnar is one of them.

The Beast was the cynosure of all eyes wherever he went - the WWE, the NFL and the UFC. And he knew it. Just 5 months after making it to the main roster, a 25-year-old Lesnar would become WWE Champion, the youngest in the company's history. Two short but glittering years later, Lesnar would leave for the NFL, where he was signed by the Minnesota Vikings. When things didn't work out the way he hoped, Lesnar set a course for the UFC and became Heavyweight Champion in just his third fight in the company.

After losing to Cain Velasquez and Alistair Overeem, Lesnar revealed he was beset with health issues and retired from MMA. The WWE was quick to snap him up and it was assumed that was where he would stay. But in June 2016, it was announced that Lesnar would return for a one-off fight at UFC 200, their landmark event. Though he was stepping into the octagon for the first time in 5 years, Lesnar didn't miss a beat in his win over Mark Hunt. He set the UFC record for largest fight purse at the time, earning $2.5 million for 15 minutes in the octagon. This was the third event with over a million PPV buys that Lesnar was a part of, the previous being UFC 100 and UFC 116.

Things started to unravel a couple of weeks later when it surfaced that Lesnar had tested positive for a banned substance. He was fined $250,000, suspended for a year from the fight and his win was overturned to a no contest. An outraged Mark Hunt filed a lawsuit against the UFC alleging that they allowed Lesnar to compete despite not being part of the testing pool for the prerequisite period. That wasn't the only time Lesnar faced such accusations. In 2001, was arrested in Louisville, Kentucky for possessing anabolic steroids, but wasn't charged with anything because the substances were reportedly legal.

Lesnar announced a second retirement from MMA this February, but there was a slight buzz about a possible comeback. That is, until...