Serena Williams worries of hypocrisy after Jannik Sinner's three-month doping ban / Jannik Sinner considered quitting tennis during fallout from doping case / Jannik Sinner considered quitting tennis before accepting doping ban / Jannik Sinner is out of a Las Vegas exhibition because of his doping ban. Casper Ruud will fill in / Serena Williams on Jannik Sinner doping case: I'd have been banned for 20 years / Serena Williams admits surprise over Jannik Sinner's ban: 'I would have got 20 years' / Italian Open organizers can't wait to welcome back Jannik Sinner from his doping ban / Carlos Alcaraz admits pressure to overtake Jannik Sinner at top of world rankings 'killed him' / Jannik Sinner was 'very fragile' as he speaks out in first interview since doping ban / Jannik Sinner's sacked trainer breaks silence on why he carried banned substance in house