World No. 1 Jannik Sinner remains confident of avoiding a doping ban, after WADA appealed a decision to clear him of any wrongdoing over previous positive tests.
Djokovic: Sinner doping case 'not helping our sport at all'
Novak Djokovic reacts to Jannik Sinner twice testing positive for a banned substance earlier this year, with an independent tribunal allowing the world No. 1 to continue playing.
