Dillian Whyte's positive drugs test was due to contamination, reports Sky Sports
Promoters reveal Baumgardner failed doping test prior to Linardatou bout
Anthony Joshua calls for more random drug testing after Whyte bout called off
Dillian Whyte's 'adverse' doping test forces cancellation of Anthony Joshua bout
Joshua set for Whyte rematch at London's O2 Arena in August as his comeback continues
