Roger Federer has questioned why Jannik Sinner was not provisionally suspended after the Italian world number one failed two drugs tests earlier in the year.

In March, Sinner twice tested positive for clostebol, an anabolic steroid. He claimed the steroid had entered his system through a massage from his physiotherapist, and was eventually cleared of any wrongdoing by an independent tribunal in August.

There were claims that Sinner was receiving preferential treatment, with fellow player Denis Shapovalov writing on social media that there were “different rules for different players”. More recently, Sinner admitted that he got a frosty reception in the locker room at the US Open…

www.independent.co.uk/sport/tennis/roger-federer-questions-j…