Parker's positive test for cocaine caused by nutritionist

Former world heavyweight champion Joseph Parker's positive test for cocaine at the UK Anti-Doping (Ukad) test during his defeat to Fabio Wardley on October 25, 2025, was caused by his nutritionist's cocaine use, as revealed by an Ukad investigation. Parker, who has a professional record of 36 wins and four defeats, is free to fight again after serving a three-month suspension.

The nutritionist, who employed Parker in preparation for his bout with Wardley, admitted to being a regular user of cocaine. The nutritionist's testimony stated that he had used cocaine daily in the week leading up to the bout. Parker had tested positive for cocaine on October 25, 2025, and failed another Ukad test early on October 26, 2025.

Ukad determined that Parker's cocaine ingestion occurred out of competition, therefore lifting his previous suspension. Parker announced the news of his suspension being lifted on his social media, expressing his satisfaction and looking forward to returning to the ring soon.