Jannik Sinner has had a rough few months. Though he reached the quarterfinals at the Australian Open where he lost to Stefanos Tsitsipas, his results have been sub-par by his standards.

Sinner quit with his longtime coach Riccardo Piatti and hired Simone Vagnozzi as his new coach. Even though Sinner is only 20, he realized that things are not working and was willing to make changes that will pay off in the long run.

In an interview with La Gazzetta dello Sport, Sinner talked about the things he has been working on with new coach Simone Vagnozzi.

Simone Vagnozzi and I started working on the serve, on the backhand, on doing something more at the net. No upsetting, however, because the attention remains focused on not losing my fundamental characteristics, the ones that led me to arrive in this ranking. I am satisfied because we are working very hard on the pitch, as I like it. There was a good feeling right away and not just in terms of tennis. Vagnozzi is a passionate Milan fan and when we talk about football we get along well, we are on the same wavelength.

Sinner also talked about his long term ambitions

Talking about rankings is something that I never like to do. My ambition is to grow further. And if this path takes me one day to be number 1 in the world, it will be good. It will be a difficult undertaking, but this is my dream. You have to make sacrifices and sometimes you have to have the courage to make difficult choices like I did when changing coach.

Many expect Jannik Sinner to be a multiple-time grand slam champion. It’s amazing to see someone as young as Sinner take difficult decisions in such a thoughtful manner. These decisions will pay off in the long run for Sinner.