Joseph Parker has 36 wins from his 40 pro fights

Former world heavyweight champion Joseph Parker is facing a possible ban from boxing after testing positive for cocaine.

The 33-year-old New Zealander failed a drugs test on the day of his fight with Fabio Wardley on 26 October, according to the Sun.

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He was tested by the Voluntary Anti Doping Agency (Vada) on 25 October.