0–0 (at ATP Tour level, Grand Slam level, and in Davis Cup)
Careertitles
0 1 Challenger
Highestranking
No. 273 (4 November 2024)
Currentranking
No. 1,283 (22 December 2025)
Last updated on: 22 December 2025.
Gabriel Debru (born 21 December 2005) is a French tennis player. He has a career-high ATP singles ranking of No. 233, achieved on 17 March 2025 and a best doubles ranking of No. 273, reached on 4 November 2024.[2]
Debru had remarkable results on ITF junior circuit. He won a major jr. title in singles, at the 2022 French Open.[3] He was also a runner-up in boys' doubles, at 2022 Wimbledon. As a result, he reached an ITF junior combined ranking of world No. 1 on 11 July 2022.
Professional career
2022: Major qualifying debut
Debru made his debut at the 2022 French Open qualifying round, winning against compatriot Arthur Fils but then losing in the second round.
2023: First ITF title and Challenger final
Debru reached his first Challenger quarterfinal in his first appearance of the year, at the Oeiras Indoors, Portugal. He reached another quarterfinal a month later at the Challenger La Manche in Cherbourg, defeating Kenny de Schepper before falling to British Jan Choinski. At his second French Open qualifying appearance he lost in the first round to Dominican Nick Hardt.
In July, Debru won his maiden Challenger title in Troyes, defeating third seed Timofey Skatov in the final. At 18 years and 6 months, he became the youngest French player to win a Challenger title since 2017. The only French players to win at a younger age were Richard Gasquet, Fabrice Santoro, Gael Monfils and Corentin Moutet. João Fonseca, Joel Schwärzler, Debru, Rei Sakamoto and Learner Tien became the youngest champions of 2024 at that level.[4][5]
In August, Debru won his second Challenger singles title in Como, defeating Ignacio Buse in the final.[6] He became the third-youngest Frenchman to win multiple Challenger trophies (since 1978), joining former Top 10 players Richard Gasquet and Gael Monfils.[7] In October, Debru won his maiden Challenger doubles title in Saint-Brieuc, partnering with Geoffrey Blancaneaux.[8]
2025-2026: College years
Debru announced he would join the University of Illinois in the 2025-26 school year where his brother Mathis already played.[9]
Grand Slam performance timeline
Key
W
F
SF
QF
#R
RR
Q#
P#
DNQ
A
Z#
PO
G
S
B
NMS
NTI
P
NH
(W) winner; (F) finalist; (SF) semifinalist; (QF) quarterfinalist; (#R) rounds 4, 3, 2, 1; (RR) round-robin stage; (Q#) qualification round; (P#) preliminary round; (DNQ) did not qualify; (A) absent; (Z#) Davis/Fed Cup Zonal Group (with number indication) or (PO) play-off; (G) gold, (S) silver or (B) bronze Olympic/Paralympic medal; (NMS) not a Masters tournament; (NTI) not a Tier I tournament; (P) postponed; (NH) not held; (SR) strike rate (events won / competed); (W–L) win–loss record.
To avoid confusion and double counting, these charts are updated at the conclusion of a tournament or when the player's participation has ended.
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France 
