2022: Maiden Challenger title Bellucci won two
ATP Challenger singles titles at the
2022 Saint-Tropez Open and the
2022 Vilnius Open, both in October 2022. He became the second Italian NextGen ATP player to lift multiple trophies in the season (after
Luca Nardi with three) and the youngest from his nation to win Challenger titles in back-to-back weeks since 19-year-old
Stefano Pescosolido in 1991. As a result, he rose to a career-high world No. 156 in the singles rankings.
2023–2024: Major, Masters debuts, ATP quarterfinal, top 100 In January 2023, Bellucci qualified for the
2023 Australian Open to make his Grand Slam debut. As a result he made his debut in the top 150 at world No. 142 on 30 January 2023. Bellucci won the
ATP Challenger doubles title at the
2024 Tennis Challenger Hamburg with
Rémy Bertola. Ranked No. 173, he made his debut at the
2024 French Open after qualifying for the main draw. Ranked No. 150, he made his debut at the
2024 Wimbledon Championships after also qualifying for the main draw. Bellucci qualified for the main draw and reached his first ATP quarterfinal at the
2024 Atlanta Open defeating second seed
Adrian Mannarino. Ranked No. 125, he also qualified for the
Citi DC Open in Washington, defeating
Tristan Boyer and
Leandro Riedi. He recorded a first-round win in the main draw at the ATP 500 level over
Mackenzie McDonald. In August, he reached the Challenger final after qualifying at the
2024 Cary Tennis Classic but lost to
Roman Safiullin, missing two match points and the opportunity for a Top 100 debut. Ranked No. 102 he also qualified on his debut for the main draw of the
US Open and recorded his first Grand Slam win over wildcard
Stan Wawrinka. He qualified for the main draw at the
2024 Japan Open Tennis Championships but lost in the first round to
Jack Draper. He made his debut at the
2024 Rolex Shanghai Masters after qualifying for the main draw and defeated lucky loser
Billy Harris, his first win at this level, before losing to second seed
Alexander Zverev. He finished the season ranked world No. 100 on 18 November 2024.
2025: First top 10 win and ATP semifinal, top 70 At the
2025 ABN AMRO Open in Rotterdam, Bellucci upset second seed
Daniil Medvedev, recording his first top 10 win as a qualifier, and reached his first ATP 500 quarterfinal. Next, he upset another seed,
Stefanos Tsitsipas seeded sixth, to reach his first ATP Tour semifinal and also first at the 500-level. As a result, he moved to a new career-high into the top 70 in the ATP singles rankings on 10 February 2025. ==Personal life==