Australia’s top-10 star remains disappointed with the secretive nature of the investigation into, and subsequent deal with, the Italian.

He has won the past two Grand Slams - but less than a month after his Australian Open victory Jannik Sinner is the talk of tennis, after agreeing a doping deal which has seen him banned for three months. The timing means the men's world number one will be back for the next major - the French Open. Convenient, critics say.