Inside Jannik Sinner’s coaching team.
The top seed and defending champion, Jannik Sinner powered his way into the US Open 2025 final. Unfortunately, the Italian fell agonisingly short against rival Carlos Alcaraz in the summit clash. After a three-month doping suspension earlier this year and a retirement in the Cincinnati final against Carlos Alcaraz, the Italian star’s path has not exactly been smooth. But who has been coaching the four-time major champion through it all?
Jannik Sinner’s transformation into a multiple-time Grand Slam champion is rooted in the guidance of Darren Cahill and Simone Vagnozzi. However, earlier in the season, it was announced that Cahill will retire by the end of the 2025 season. More recently, Vagnozzi told Italy’s La Repubblica that Cahill will take a brief vacation and will not be traveling with Sinner to New York for the year’s last Grand Slam.
Cahill, the Australian tactician who has previously guided the likes of Andre Agassi and Simona Halep, joined forces with Vagnozzi in mid-2022 after Sinner parted ways with his longtime mentor Riccardo Piatti. He ended up joining the team in New York, and is rumored to continue his alliance with Sinner in 2026.
Vagnozzi offered reassurance after Sinner’s Cincinnati setback, telling ESPN, “I spoke briefly with him last night. He was feeling a little better. He’ll rest, that’s the plan, and I hope he can get on the court on Thursday and start hitting some balls. We’re confident he’ll be fine.”
Beyond reassurance, Cahill has been instrumental in reshaping Sinner’s game. In 2022, he and Vagnozzi even consulted Novak Djokovic for a candid assessment, he explained in the ‘Served with Andy Roddick’ podcast. The Serbian’s analysis inspired adjustments to Sinner’s serve, backhand, and court positioning, giving the Italian more ‘variation’ and a style reminiscent of Rafael Nadal’s aggressive baseline movement.
Sinner’s rise is not just about head coaches, but his broader team has been carefully assembled. Simone Vagnozzi, who previously coached Marco Cecchinato, brought in physiotherapist Umberto Ferrara and a fitness coach in 2022, before Darren Cahill formally joined later that summer.
By 2023, Giacomo Naldi became Sinner’s personal physiotherapist, replacing Ulises Badio, while renowned fitness trainer Marco Panichi was briefly part of the setup before Ferrara and Naldi were reinstated (they were fired in the first place due to doping allegations) in September 2024. In July 2025, Sinner officially announced Ferrara’s return as his full-time fitness coach.
The Italian former World No. 1 also collaborates with osteopath Andrea Cipolla while drawing on Formula Medicine, a sports psychology program originally designed for Formula 1 drivers, rather than employing a traditional mental coach. This innovative approach emphasizes focus, reaction time, and stress management.
Sinner’s entourage has helped him endure a whirlwind season marked by fatigue, physical doubts, and a three-month doping disruption, yet still capture the Australian Open and Wimbledon crowns. His achievements at the age of 24 speak not just of his individual talent, but of a finely tuned team behind him.
Mandatory Image Credit: Geoff Burke-Imagn Images
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