Jannik had some physical problems during the spring, especially in his hip, which forced him to withdraw from the Masters 1000 in Madrid and to give up the Masters 1000 in Rome. Just before the US Open,

U.S. Open champion Jannik Sinner has introduced a new fitness coach and physiotherapist to his team after firing his previous staff members because of a doping case.

Jannik Sinner has hired two of Novak Djokovic’s former coaches as the World No.1 shakes up his backroom team following his doping scandal. Sinner stormed to his second Grand Slam triumph at the US Open earlier this month but it was a drama-filled fortnight for the Italian who escaped a doping ban on the eve of the tournament.