Jannik Sinner has hired Darren Cahill as his full-time coach. Sinner split with longtime coach Riccardo Piatti earlier this year. Sinner started working with Cahill a few weeks before the 2023 Wimbledon Championships.

Simone Vagnozzi will continue to be part of Sinner’s coaching team. But Darren Cahill is expected to work longterm with Sinner. After the partnership with Cahill, Sinner has improved his serve and has attacked the net more often.

Though Sinner has been ranked in the top 10 in the world and has reached the quarterfinals at multiple grand slams, he is yet to win a grand slam. He has been looking to add variety to his aggressive game and ultimately win a grand slam.

Cahill has coached many top players including Andre Agassi and Lleyton Hewitt. Recently, he coached Simona Halep and helped her win two grand slam titles.