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

Novak Djokovic’s wife Jelena has warned Jannik Sinner that she “will not give in” in a rebuttal to the Italian hiring two former members of her husband’s team.

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

World number one Jannik Sinner has added fitness coach Marco Panichi and physiotherapist Ulises Badio to his staff following the dismissal of two members after he escaped a doping ban despite failing two drug tests in March.

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.