Serbian superstar Novak Djokovic called for "clear protocols" and "standardized approaches" to tennis doping cases on Saturday in response to the announcement that top-ranked Jannik Sinner had escaped a ban despite two positive tests this year..
Serbian superstar Novak Djokovic called for "clear protocols" and "standardized approaches" to tennis doping cases on Saturday in response to the announcement that top-ranked Jannik Sinner had escaped a ban despite two positive tests this year..