Boxing superstar Sergey Kovalev tested positive for performance-enhancing drugs ahead of his upcoming matchup against Bektemir Melikuziev. BoxingScene.com’s Dan Rafael reported that Kovalev tested positive for synthetic testosterone in a VADA drug test administered on December 30 in Las Vegas. The test came back on Wednesday and Team Kovalev was alerted of the positive drug … Continue reading Sergey Kovalev tests positive for performance-enhancing drugs