2022: First Challenger title In 2022, Vacherot won his first
Challenger title at the
Nonthaburi Challenger, Thailand, beating
Lý Hoàng Nam in the final.
2023: Masters debut Vacherot received a wildcard for the
2023 Monte-Carlo Masters main draw, making his Masters debut. He lost in the first round to
Luca Nardi.
2024: Grand Slam and top 125 debuts Vacherot received a wildcard for the
2024 Monte-Carlo Masters, losing to ninth seed
Grigor Dimitrov. Ranked No. 136, he qualified for the main draw at the
2024 Țiriac Open but lost his opening match to eventual champion
Márton Fucsovics. Vacherot reached the top 120 on 6 May 2024, following a semifinal appearance as a qualifier, at the
2024 Open Aix Provence. Vacherot made his Grand Slam debut at the
2024 French Open after qualifying, becoming the first player from the
Monégasque Tennis Federation to qualify for the main draw. He lost in the first round to
Alejandro Davidovich Fokina.
2025: Historic Masters title and top 30 Vacherot also received a wildcard for the
2025 Monte-Carlo Masters and recorded his first Masters win over
Jan-Lennard Struff in straight sets. He became the first Monégasque player to win a main draw match at the tournament since Jean-René Lisnard in
2009. In October, ranked No. 204, Vacherot won his first title at the
2025 Rolex Shanghai Masters as a qualifier, becoming the lowest ranked player to win a
Masters 1000 tournament. After qualifying, he recorded his second and third Masters wins by defeating
Laslo Djere in straight sets and then
Alexander Bublik in the second round. Vacherot reached his first Masters 1000 fourth round following the retirement of 20th seed
Tomáš Macháč. He then upset
Tallon Griekspoor to reach his first Masters quarterfinal and thus became the lowest-ranked quarterfinalist in the event history in Shanghai, and the first player from Monaco to reach an
ATP Tour and Masters-level quarterfinal at the same time. Next he defeated
Holger Rune in the quarterfinals. Vacherot defeated
Novak Djokovic in the semifinals, recording the first top 10 (and top 5) win for a Monégasque player in history, and becoming the lowest ranked player to reach a
Masters 1000 final. In Vacherot’s 27th tour-level match, he defeated his cousin
Arthur Rinderknech to win his first ATP Tour and Masters 1000 title. Going into the Shanghai final, Vacherot and Rinderknech had each won 3 matches after dropping the first set. The cousins also collectively defeated 10 of the 32 seeds (5 each) in the draw. Vacherot received a wildcard into the
Basel Open, but lost to
Taylor Fritz in the first round. Vacherot received a wildcard into the
Paris Masters and then reached the quarterfinals. Vacherot reached a new career-high ranking in the top 30 on 3 November 2025.
2026: Major third round and top 20 Vacherot made his debut at the
2026 Australian Open where he was seeded for the first time and recorded his first major wins to reach the third round, also for a first time. ==Personal life==