WADA claimed last month's ruling, which was made by an independent tribunal, which found Sinner had no case to answer was "not correct", and the organisation has now appealed to the Court of Arbitration for Sport (CAS), seeking a ban of between one and two years for the 23-year-old.

On Sunday, Jannik Sinner (No. 1 in the world) faces Jiri Lehecka (No. 37) in the quarterfinals at the China Open.Sinner enters the quarterfinals after winning in three sets, 3-6, 6-2, 6-3, over

Highlights of the China Open match between Jannik Sinner and Roman Safiullin. Watch Next. Every PL club's most important player ri... Watch Now

Coco Gauff reached the third round of the China Open by beating Clara Burel 7-5, 6-3 on Friday in her first match since the U.S. Open.

Coco Gauff reached the third round of the China Open by beating Clara Burel in her first match since the U.S. Open.

Carlos Alcaraz fumed at the umpire at the China Open in his opening match against Giovanni Mpetshi Perricard. The French Open and Wimbledon champion claimed victory over the Frenchman on Friday - but not everything went his way.