8. Frank Mir
Former UFC heavyweight champion, Frank Mir, had his UFC career ended by USADA. He was notified of a doping violation on April 7th, 2016. The test he failed was from his March 20th, 2016 fight with Mark Hunt in Australia.
Mir has spent tens of thousands of dollars testing supplements in order to prove his innocence. It was all for not, however, as USADA suspended him 2 years. Instead of facing the suspension, Mir was granted his release from the UFC and signed with Bellator. He was recently knocked out in the 1st round by Fedor Emelianenko.
