Jannik Sinner has split with his longtime coach Riccardo Piatti. The move is surprising because Piatti is like  a father figure to Sinner and has guided his career from a young age.

At the Australian Open earlier this year, Jannik Sinner hinted at adding new members to his team. This move rattled their relationship and led to the split. Though he reached the quarterfinals at the Australian Open, results have been underwhelming by his standards.

Sinner started working with Riccardo Piatti at age 13. By age 17, Sinner started winning ATP Challenger titles. He broke into the Top 100 world ranking in 2019. That year, he became the first teen to win an ATP 500 tournament since that category was created in 2009.

Piatti has coached several top players including with Ivan Ljubičić, Richard Gasquet, Borna Coric, Maria Sharapova, and Novak Djokovic.