Jannik Sinner has etched his name into tennis history by becoming the youngest ATP world number one to reach the semifinals of all four Grand Slam tournaments in a single season. At just 24 years and 18 days old, Sinner’s 2025 campaign has been nothing short of extraordinary, marked by consistency, dominance, and a fearless approach on every surface.

Four Grand Slam Semifinals in One Year

Sinner’s journey began with a title win at the Australian Open, followed by a runner-up finish at Roland Garros. He then conquered Wimbledon and advanced to the semifinals of the US Open, where he defeated Lorenzo Musetti in straight sets. This achievement places him among the elite few who have reached the final four in all Grand Slams within a single calendar year.

Joining an Exclusive Club

Only three other players who held the ATP world number one ranking have accomplished this feat: Ivan Lendl, Roger Federer, and Novak Djokovic. Each of these legends managed to reach four Grand Slam semifinals in a season while sitting atop the rankings, a rare combination of form and dominance that Sinner now shares.

Youth and Excellence Combined

What makes Sinner’s accomplishment even more remarkable is his age. While Rafael Nadal reached this milestone at 22, Sinner is the youngest to do so while ranked world number one. His rise reflects a new era in men’s tennis, where youth and precision are reshaping the competitive landscape.

The Road Ahead

With his current momentum, Sinner is poised to challenge long-standing records and redefine expectations for the modern tennis champion. His ability to perform under pressure, adapt across surfaces, and maintain peak physical and mental form throughout the season signals a bright future at the top of the sport.

Sinner at the U.S. Open, ranking, and results in 2025

Currently ranked no.1, the Italian has achieved an overall 36-4 win-loss record in 2025. The Italian is competing at the U.S. Open where he beat the world no.89 Vit Kopriva 6-1 6-1 6-2

, the world no.36 Alexei Popyrin 6-3 6-2 6-2, the world no.29 Denis Shapovalov 5-7 6-4 6-3 6-3, the world no.24 Alexander Bublik 6-1 6-1 6-1 and the world no.10 Lorenzo Musetti 6-1 6-4 6-2.

Jannik Sinner will fight against the world no.27 Felix Auger-Aliassime in the semifinal on Friday at 7:00 pm on Arthur Ashe Stadium. Their head to head is 2-1 for Auger-Aliassime.

Jannik conquered 2 titles in 2025 at the Australian Open and Wimbledon. Sinner was the finalist in Rome (Internazionali BNL d’Italia), at the French Open and in Cincinnati (Cincinnati Open).

Jannik won 21 titles in his career: 10 on hard courts, 1 on clay courts, 8 on indoor courts and 2 on grass courts. (See the list of his titles)