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.

He qualified for the main draw and reached his first ATP quarterfinal at the 2024 Atlanta Open defeating second seed Adrian Mannarino.

[6] 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.

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.

[10] 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.

[12] At the 2025 ABN AMRO Open in Rotterdam, Belucci upset second seed Daniil Medvedev recording his first top 10 win, as a qualifier, and reached his first ATP 500 quarterfinal.