Jannik Sinner has rehired his former fitness trainer, Umberto Ferrara, who left his camp last year after the Italian twice tested positive for the banned substance clostebol

Jannik Sinner has rehired fitness coach Umberto Ferrara almost one year after firing him for his role in the world No.1’s three-month doping ban. Sinner failed two drug tests last year and was suspended at all tennis events from February 9, 2025 to May 4, 2025 after a settlement with the World Anti-Doping Agency (WADA).

Wimbledon champion had sacked Umberto Ferrara and his physiotherapist last year for their roles in his testing positive for banned substance.