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.

There was a risk that the 3-time Grand Slam champion could suffer a suspension of one to two years, which would probably have been excessive in relation to the infraction committed. For this reason, Sinner and WADA have found an agreement that was published a week ago and which provides for a three-month suspension for the Italian ace.

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 men's world No. 1 will miss several tournaments, but no Grand Slams. Here's what to know about the doping proceedings against him.

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?"