The presence of this figure has contributed significantly to making Jannik Sinner so powerful and composed at present.
Jannik Sinner Recently, he got wonderful news from Darren Cahill – his coaching partner since 2022 who has played a major role in Sinner’s remarkable progress over the last two seasons.
Darren Cahill had previously revealed plans to retire after this season ends. Sinner admitted he was "very disappointed" by this news, given the Australian coach’s crucial role in helping him reach the ATP world No. 1 ranking.
However, an interesting turning point came when Sinner disclosed that they had a brief discussion before the 2025 Wimbledon final: if he won the title, he would have the right to decide Cahill’s future. When Sinner triumphed in London, the story became more intriguing than ever. Ahead of the 2025 ATP Finals in Turin – Sinner’s hometown – Cahill confirmed he would leave the decision entirely to his protégé.
"My future lies in Jannik’s hands. I keep my promises. If he wants me to stay, I will stay.", Cahill stated at the press conference.
Nevertheless, the 59-year-old strategist expressed a humble opinion: "I think Jannik should consider bringing in a fresh voice, a different perspective to his game. But if he’s not ready, I will continue to support him."
Sinner, known for his calm demeanor and reserved emotions, had a rare moment of frustration at the 2025 Paris Masters. When his team didn’t react after Ben Shelton broke his serve, Sinner showed his displeasure, telling his staff to "sit still like they’re dead." However, the incident was quickly resolved and did not affect his relationship with Cahill and Vagnozzi.
Cahill is one of the world’s most renowned coaches. Before working with Sinner, he guided Andre Agassi, Lleyton Hewitt, and Simona Halep to Grand Slam victories. Since July 2022, he and Simone Vagnozzi have jointly coached Sinner, providing a balance of experience, strategy, and competitive spirit.