Sinner had been previously cleared of any misconduct by an independent group, but Wada made a call to the Court of Arbitration for the Arbitration of Sports (CAS) for the ban to last for two years.
However, he reached a settlement with the Anti-Doping Agency for shorter sanctions and is expected to make a comeback at the Italian Open in Rome (May 6-8) after the ban expires on May 5.
Wada admits that the sinner has not gained any competitive advantage from the forbidden substances and that he has no disadvantages to accidental pollution.
His ban has been criticized by some in the tennis world, with 23-time Grand Slam singles champion Serena Williams saying she could have accepted the 20-year ban and let her title “take it away.”
Former UK No. 1 Tim Henman marked the deal as “too convenient”, while three-time Swiss Grand Slam champion Stan Wawrinka said he “didn’t believe in cleaning sports anymore.”
But the sinner defended his position: “I don’t want to respond to criticism. People are free to say what they want and judge people.
“What matters to me is that I know what I've been through. It's difficult and I don't want anyone to go through this experience as an innocent person.”
