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.

In a long interview with 'BBC Sport', James Singer - one of Jannik's lawyers - revealed further details about the agreement between the world number 1 and WADA, which was made official when the Italian was already in Doha to participate in the prestigious ATP 500.

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.

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.

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?"