World number one Jannik Sinner may take time to hit his stride on his return from a three-month doping ban next month but will be in top form when he heads to the French Open, Italy's Davis Cup captain Filippo Volandri said.

Serena Williams has highlighted the perceived double standards surrounding men’s world No. 1 Jannik Sinner’s doping ban, saying in a new interview with Time magazine that she would have been suspended for 20 years for a similar offense.

Serena Williams has expressed surprise over the length of Jannik Sinner ’s ban from tennis, joking that she would have been stripped of her grand slam titles had she failed a drugs test.