Sergey Kovalev Reportedly Tests Positive for Synthetic Testosterone for 2nd Time

A second sample from light heavyweight star Sergey Kovalev was flagged for synthetic testosterone, according to BoxingScene's Dan Rafael.   Kovalev was scheduled to fight Bektemir Melikuziev on Jan. 30 before he tested positive for external testosterone and metabolites earlier this month. Officials canceled the bout as a result.