CM Punk last competed in the Ultimate Fighting Championship back in June of 2018, where he dropped a unanimous decision to the previously unheralded Mike Jackson at UFC 225.
Now, over three years later, Punk has had the defeat wiped from his Mixed Martial Arts record, as it transpires that Jackson had tested positive for marijuana use on fight night.
Though this was decided upon back in October 2018, the details are only now reaching the headlines thanks to a Freedom of Information Act request from MMA outlet, MMA Junkie.
Per the Illinois Department of Financial and Professional Regulation:
The official result of a full contact martial arts bout can be changed to a ‘no contest’ as an outcome of an adverse post-bout disciplinary finding against a contestant. As detailed in the consent order provided, Mr. Jackson tested positive for tetrahydrocannabinol due to marijuana following the June 9, 2018 UFC event at the United Center in Chicago.
Neither Punk not Jackson have competed in MMA since the bout in 2018, though Jackson remains signed to the roster.
CM Punk has however kept himself busy with acting roles and commentating on Cage Fury Fighting Championships, which streams on the UFC Fight Pass app.