#2 Brian Bowles
At the start of the decade, Brian Bowles was the reigning WEC Bantamweight champion, as he’d defeated longtime titleholder Miguel Torres by knockout at WEC 42 in August 2009. 2010 started poorly for him, though; he broke his hand in a title defense against Dominick Cruz and lost the belt he’d worked so hard to gain.
Following that, Bowles was sidelined for a year, before entering into the UFC when the WEC was folded into the larger promotion in 2011. The Mark Wahlberg look-alike won his first two fights in the Octagon, defeating Damacio Page and Takeya Mizugaki, but an attempt to gain another title shot saw him come up short in a fight with Urijah Faber.
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Injuries then saw Bowles miss almost two years of action, and when he returned, things went from bad to worse. UFC 160 saw him lose by TKO to George Roop, and following the fight he was suspended for 9 months due to elevated testosterone levels.
The former WEC champ would never return to the UFC; in January 2015 Bowles was arrested by Georgia State police, who discovered methamphetamine, diazepam and various guns at his residence. He was charged with 7 felonies, including intent to sell drugs, and as per the most recent reports on his case, remains incarcerated.