Williams ring opponent Botha failed dope test - report

(Reuters) - Former All Black Sonny Bill Williams's opponent Francois Botha failed a dope test before their heavyweight bout, local media reported on Sunday, adding further doubts to the credibility of the controversial fight.

Botha, who was beaten on points by Williams on Friday, had tested positive for phentermine, a banned appetite suppressant, the Sydney Morning Herald said in a report.