2015: Juniors On the junior tour, Denolly had a career high combined ranking of world No. 3 achieved on 8 June 2015. He reached the semifinals of the
2015 French Open boys' singles event, losing to
Taylor Fritz.
2018: Grand Slam doubles debut In June, Denolly made his Grand Slam doubles debut at the
French Open, as a wildcard pair partnering with
Alexandre Müller but they lost in the first round to
Raven Klaasen and
Michael Venus.
2019: Maiden doubles Challenger title, Top 300 in singles In June, Denolly won his maiden
Challenger title in
Blois, partnering with
Alexandre Müller.
2020: Second Roland Garros wildcard in doubles In September, Denolly played his second Grand Slam match at the
French Open, partnering with
Kyrian Jacquet but they lost in the first round to eventual semifinalists
Juan Sebastian Cabal and
Robert Farah.
2021-26: Doubles top 250, ATP singles debut & first win Ranked No. 327 at the
2025 U.S. Men's Clay Court Championships Denolly qualified for the main draw making his ATP debut, with a win over third qualifying seed and compatriot
Adrian Mannarino. He recorded his first ATP win over
Brandon Holt in straight sets with two tiebreaks. ==Performance timeline==