The World Anti-Doping Authority’s ‘case resolution agreement’ with ... Women’s world No.1 Aryna Sabalenka, while not passing judgement on Sinner or indeed Iga Swiatek who had also tested positive last year and received a one-month suspension ...

The case of the world No. 1 in men's tennis is at the center of anti-doping protocols and reforms that could redefine its parameters.

Jannik Sinner received a 3-month ban after testing positive for a banned substance, with the Italian initially refusing to accept he would face a suspension.

Sinner asked: "Why would we do that if the first independent tribunal found it was no ban at all, why would I accept three months now?"