Novak Djokovic has called for “clear protocols” and “standardised approaches” to tennis doping cases with Jannik Sinner having escaped a ban after testing positive for a banned substance.
The world number one twice tested positive for clostebol – a steroid that can be used to build muscle mass – in March.
The Italian was cleared of fault or negligence by a tribunal last week, with the International Tennis Integrity Agency (ITIA) finding Sinner had been inadvertently contaminated with the substance by physiotherapist Giacomo Naldi…
