Former heavyweight world champion Joseph Parker claimed a failed drugs test that resulted in him being suspended from boxing was caused by exposure to cocaine being used by his nutritionist, according to UK Anti-Doping (UKAD).
Source: [Sky Sports](https://www.skysports.com/boxing/news/12040/13570397/joseph-parker-former-heavyweight-champion-claimed-failed-drug-test-was-caused-by-cocaine-use-of-nutritionist-ahead-of-fabio-wardley-fight)