Overview

• Sinner has brought back athletic trainer Umberto Ferrara, whom he had dismissed last year following the Clostebol controversy
• Ferrara and physiotherapist Giacomo Naldi were originally let go after an anti-doping ruling found Clostebol in Sinner’s samples, triggering a three-month suspension
• Long-time coach Simone Vagnozzi oversees Sinner’s technical and tactical development while Cahill handles mental and emotional preparation
• Darren Cahill’s future with Sinner’s team beyond 2025 remains undecided, with no formal agreement yet in place
• The reinstatement of Ferrara is intended to reinforce Sinner’s physical conditioning as he aims to complete all four majors in a single season