Jannik Sinner will defend his US Open title without the presence of longtime coach Darren Cahill in his corner. The Australian coach has opted to take a short break from the tour, citing personal reasons and a desire to spend time with family. This marks a rare shift in Sinner’s coaching setup, which has remained consistent since Cahill joined forces with Simone Vagnozzi in 2022.
Simone Vagnozzi Takes the Lead
With Cahill absent, Simone Vagnozzi will assume full coaching responsibilities during the tournament in New York. Vagnozzi has played a pivotal role in Sinner’s rise to world No. 1, and the pair have developed a strong tactical and emotional rapport. Vagnozzi’s leadership will be crucial as Sinner aims to become the first man since Roger Federer to win back-to-back US Open titles.
A Season of Transitions
Sinner’s team has undergone several changes in recent months. Just before Wimbledon, he parted ways with fitness coach Marco Panichi and physiotherapist Ulises Badio. In a surprising move, he rehired Umberto Ferrara, who had previously worked with him during a controversial doping case in 2024. The reshuffle reflects Sinner’s renewed focus on consistency and peak performance.
Confidence Amid Change
Despite the absence of Cahill, Sinner remains confident heading into the final Grand Slam of the season. His recent Wimbledon victory over Carlos Alcaraz showcased his mental resilience and tactical sharpness. With Vagnozzi and Ferrara by his side, Sinner is expected to maintain his high level of play and continue his dominant run on hard courts.
Looking Beyond New York
While Cahill’s future remains uncertain, there are indications he may continue working with Sinner beyond 2025. The coach had previously announced plans to retire, but recent comments suggest he could reconsider. For now, the focus remains on Flushing Meadows, where Sinner will attempt to cap off a historic season with another major title.
Jannik Sinner in 2025
Now ranked no.1, Jannik played his last match on the 13th of July when he overcame world no.2 Carlos Alcaraz 4-6 6-4 6-4 6-4 in the final in Wimbledon to win his 21st career title.
This season Jannik has managed to achieve a 26-3 win-loss record. The Italian conquered 2 titles in 2025 at the Australian Open and Wimbledon. Sinner got to the final in Rome and French Open.