Serena Williams on Jannik Sinner doping case: I’d have been banned for 20 years

Serena Williams claims she would have been banned for 20 years had she failed a drugs test (Joe Toth/AELTC/PA)

Serena Williams insists she would have been stripped of grand slam titles and given a 20-year ban had she failed a drugs test in the manner of Jannik Sinner.

Sinner is serving a three-month suspension that expires on May 4 after returning two positive tests for the banned anabolic steroid clostebol last year.