Ex-heavyweight champion Joseph Parker has been cleared of breaking drug rules after proving his adverse test finding was due to his nutritionist taking cocaine. Parker, 34, was found to have traces of the Class A drug in his system on the day of his defeat by Fabio Wardley last October following a test conducted by the Voluntary Anti-Doping Agency (VADA). He denied knowingly taking the substance and a UK Anti-Doping (UKAD) investigation has now ruled in his favour, saying the boxer provided enough evidence to back up his argument that his positive test was due to exposure to cocaine taken by his nutritionist. ...read