Jannik Sinner REFUSES to rule out boycott of Grand Slams as tennis civil war escalates: World No 1 hits out at 'lack of respect' shown to tennis stars, days after threat from Aryna Sabalenka
Sinner, the men's world No 1, was quizzed on the ongoing dispute over prize money after women's counterpart Aryna Sabalenka warning players could opt to skip majors.