Jannik Sinner might have achieved numerous milestones already in his career but there is plenty of room for improvement, according to one member of his team.
The 21-year-old is currently ranked eighth in the world and has already reached the quarter-final stage or better at every Grand Slam tournament. So far in his career, Sinner has won eight ATP titles with the most recent of those being in Montpellier earlier this year. He was also runner-up at the Miami Masters twice in 2021 and 2023.
Earlier this month Sinner reached the semi-finals at Wimbledon before losing in straight sets to Novak Djokovic. One of those overseeing his performances on the Tour is coach Simone Vagnozzi who believes that the Italian’s deep run at the grasscourt major was achieved with the help of recent adjustments made to his serve. Vagnozzi works alongside Darren Cahill who is Sinner’s other coach.
“With Darren we planned to intervene at the end of the season, during the winter preparation. But Jannik’s premature exit in Paris (at the French Open) allowed us to anticipate the move,” he explained during an interview with Corriere della Sera.
“The best and most productive technique for Sinner is the foot up: that is, the service with the feet approaching. At Wimbledon he immediately found himself more at ease: so the movement is more fluid, the other serve requires more strength and if the match dragged on, or Jannik started to get a little tired, he risked losing pace.”
This recent change is among a series of adjustments being made to improve Sinner’s chances against the big names of the sport. Despite his credentials, he has only won 13 out of 39 meetings against top 10 opponents on the Tour. Looking at this year specifically, his record currently stands at four wins against five losses.
Vagnozzi describes his player as somebody who is ‘nowhere near a finished product.’ However, he has hailed the improvements that he has made so far.
“Jannik is nowhere near a finished project. We work a lot, and in-depth, on everything: it’s too early to allow us to take care of only the details.” He explained.
“Physically, thanks to the hours in the gym, he has improved a lot; after Roland Garros we changed the serve, and the decision paid off at Wimbledon: in London Jannik was among the tennis players with the best percentages of points scored on first serve, aces and ball speed.’
“He can improve in many respects: experience, the tactical vision of the match, there is no area of his tennis in which Sinner is at his top. And this is great news for me.”
Sinner is set to return to action next month at the Canadian Masters in Toronto. He will also play at the Cincinnati Masters before the US Open.
