ネバダ州アスレチック・コミッション
The following year in September 2018, McKenzie was due to face J.D. Domengeaux at a Tuff-N-Uff event. The fight was called off the day before the bout after McKenzie refused to provide a urine sample to anti-doping and then attempted to provide fake urine. In November Mckenzie was suspended by the Nevada Athletic Commission for four years.