Doping Agency on Monday offered an explanation for why top-ranked tennis player Jannik Sinner received a much shorter doping ban than the six-year suspension it handed to a Spanish figure skater in a doping case involving the same substance.

Novak Djokovic claimed Jannik Sinner was shown “favouritism” over his “strange” three-month doping ban as he hit out at “inconsistencies” in cases involving top players.

Jannik Sinner has accepted a three-month ban from tennis to settle a case which has lingered over the sport for months after he twice tested positive for a banned substance, the World Anti-Doping Agency (WADA) announced on Saturday.