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TennisATPRight-handed

Gabriel Diallo

CanadaAge and results

Gabriel Diallo is a tennis player on the ATP Tour who reached a career-high ranking of No. 33 on August 18, 2025.

96 ATP Tour matches1 title

Updated Nov 11, 2026, 7:24 AM ET

2026 record9-18 Titles12 finals Career highNo. 33Aug 18, 2025 Agatha's record2-02 graded calls since Oct 1, 2026

About Gabriel Diallo

Born on September 24, 2001, in Montreal, Quebec, Canada, Gabriel Diallo plays right-handed with a two-handed backhand and turned pro in 2023. Jonas Bjorkman and Johan Ortegren are his coaches, and Martin Laurendeau is his former coach. Diallo won 1 title in 2025, the Libema Open, and reached a career-high ATP Tour ranking of No. 33 on August 18, 2025.

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Agatha Research DeskUpdated Oct 27, 2026

Match history96

Every ATP Tour, Grand Slam and Olympic main-draw match in our records, newest first. A walkover is listed but never counted in a record.

2026: 10-19

Date	Tournament	Round	Opponent	Result	Score	Surface
Oct 18	Almaty Open	Qualifying Final	Rei Sakamoto	L	6-2, 4-6, 4-6	Hard
Oct 17	Almaty Open	Qualifying 1st Round	Harold Mayot	W	7-6(5), 6-2	Hard
Aug 4	National Bank Open	Round 2	Luciano Darderi	L	4-6, 3-2 ret. (ret.)	Hard
Aug 3	National Bank Open	Round 1	Kyrian Jacquet	W	6-7(1), 6-3, 6-2	Hard
Jul 27	Mifel Tennis Open by Telcel Oppo	Round 1	Tristan Boyer	L	5-7, 2-6	Hard
Jul 2	Wimbledon	Round 2	Lorenzo Sonego	L	6-7(4), 6-4, 6-7(4), 7-6(6), 2-6	Grass
Jun 30	Wimbledon	Round 1	Benjamin Bonzi	W	1-6, 4-6, 7-6(5), 6-3, 3-1 ret. (ret.)	Grass
Jun 25	Lexus Eastbourne Open	Quarterfinal	Jack Draper	L	1-6, 4-6	Grass
Jun 24	Lexus Eastbourne Open	Round 2	Tomas Martin Etcheverry	W	6-7(11), 6-3, 6-2	Grass
Jun 22	Lexus Eastbourne Open	Round 1	Terence Atmane	W	6-7(7), 6-4, 7-5	Grass
Jun 16	Queen's Club	Round 1	Alex de Minaur	L	6-7(8), 3-6	Grass
Jun 9	Libema Open	Round 1	Adrian Mannarino	L	4-6, 6-3, 5-7	Grass

Show 17 more

May 24	Roland Garros	Round 1	James Duckworth	L	3-6, 1-4 ret. (ret.)	Clay
Apr 24	Madrid Open	Round 2	Elmer Moller	L	5-7, 3-3 ret. (ret.)	Clay
Apr 16	BMW Open by Bitpanda	Round 2	Alexander Zverev	L	1-6, 2-6	Clay
Apr 13	BMW Open by Bitpanda	Round 1	Vitaliy Sachko	W	6-1, 6-2	Clay
Apr 6	Monte-Carlo Masters	Round 1	Joao Fonseca	L	2-6, 3-6	Clay
Apr 1	Tiriac Open	Round 2	Alex Molcan	L	2-6, 2-6	Clay
Mar 21	Miami Open	Round 2	Ugo Humbert	L	1-6, 4-6	Hard
Mar 20	Miami Open	Round 1	Wu Yibing	W	6-2, 7-6(3)	Hard
Mar 8	Indian Wells	Round 3	Felix Auger-Aliassime	L	7-6(5), 3-6, 3-6	Hard
Mar 7	Indian Wells	Round 2	Andrey Rublev	W	6-7(4), 7-6(1), 6-3	Hard
Mar 4	Indian Wells	Round 1	Mattia Bellucci	W	7-6(5), 6-4	Hard
Feb 17	Delray Beach Open	Round 1	Adam Walton	L	6-7(4), 3-6	Hard
Feb 10	Nexo Dallas Open	Round 1	Ben Shelton	L	4-6, 4-6	Hard
Jan 17	Australian Open	Round 1	Alexander Zverev	L	7-6(1), 1-6, 4-6, 2-6	Hard
Jan 12	Adelaide International	Round 1	Andrea Vavassori	L	3-6, 6-7(4)	Hard
Jan 7	Bank of China Hong Kong Tennis Open	Round 2	Chak Lam Coleman Wong	L	6-1, 5-7, 5-7	Hard
Jan 6	Bank of China Hong Kong Tennis Open	Round 1	Jesper de Jong	W	6-4, 7-6(7)	Hard

2025: 31-27

Date	Tournament	Round	Opponent	Result	Score	Surface
Oct 29	Paris Masters	Round 2	Alex de Minaur	L	6-7(8), 6-4, 3-6	Hard
Oct 28	Paris Masters	Round 1	Tallon Griekspoor	W	6-3, 6-4	Hard
Oct 22	Swiss Indoors Basel	Round 1	Felix Auger-Aliassime	L	2-6, 5-7	Hard
Oct 15	Almaty Open	Round 2	James Duckworth	L	6-7(3), 7-6(3), 4-6	Hard
Oct 13	Almaty Open	Round 1	Amir Omarkhanov	W	6-3, 6-1	Hard
Oct 7	Shanghai Masters	Round 4	Zizou Bergs	L	6-3, 5-7, 6-7(8)	Hard
Oct 5	Shanghai Masters	Round 3	David Goffin	W	3-0 ret. (ret.)	Hard
Oct 3	Shanghai Masters	Round 2	Benjamin Bonzi	W	6-4, 6-4	Hard
Sep 25	Japan Open	Round 1	Taylor Fritz	L	6-4, 3-6, 6-7(3)	Hard
Aug 28	US Open	Round 2	Jaume Munar	L	5-7, 3-6, 5-7	Hard
Aug 25	US Open	Round 1	Damir Dzumhur	W	7-6(4), 4-6, 7-5, 7-5	Hard
Aug 20	Winston-Salem Open	Round 2	Hamad Medjedovic	L	4-6, 2-6	Hard

Show 47 more

Aug 20	Winston-Salem Open	Round 1	Nishesh Basavareddy	W/O	Walkover	Hard
Aug 11	Cincinnati Open	Round 3	Jannik Sinner	L	2-6, 6-7(6)	Hard
Aug 9	Cincinnati Open	Round 2	Sebastian Baez	W	7-5, 6-4	Hard
Aug 1	National Bank Open	Round 3	Taylor Fritz	L	4-6, 2-6	Hard
Jul 30	National Bank Open	Round 2	Matteo Gigante	W	6-3, 7-6(5)	Hard
Jul 24	Mubadala DC Open	Round 2	Ben Shelton	L	3-6, 2-6	Hard
Jul 22	Mubadala DC Open	Round 1	Fabian Marozsan	W	6-3, 6-4	Hard
Jul 2	Wimbledon	Round 2	Taylor Fritz	L	6-3, 3-6, 6-7(0), 6-4, 3-6	Grass
Jun 30	Wimbledon	Round 1	Daniel Altmaier	W	6-1, 6-2, 6-4	Grass
Jun 26	Vanda Pharmaceuticals Mallorca Championships	Quarterfinal	Tallon Griekspoor	L	4-6, 4-6	Grass
Jun 24	Vanda Pharmaceuticals Mallorca Championships	Round 2	Laslo Djere	W	6-3, 3-6, 6-3	Grass
Jun 23	Vanda Pharmaceuticals Mallorca Championships	Round 1	Jaume Munar	W	7-5, 6-3	Grass
Jun 19	Queen's Club	Round 2	Jiri Lehecka	L	4-6, 2-6	Grass
Jun 17	Queen's Club	Round 1	Billy Harris	W	6-1, 3-6, 6-4	Grass
Jun 15	Libema Open	Final	Zizou Bergs	W	7-5, 7-6(8)	Grass
Jun 14	Libema Open	Semifinal	Ugo Humbert	W	6-3, 7-6(4)	Grass
Jun 13	Libema Open	Quarterfinal	Karen Khachanov	W	7-6(6), 6-4	Grass
Jun 11	Libema Open	Round 2	Jordan Thompson	W	4-6, 6-1, 7-5	Grass
Jun 9	Libema Open	Round 1	Aleksandar Vukic	W	7-5, 7-6(2)	Grass
May 29	Roland Garros	Round 2	Tallon Griekspoor	L	5-7, 6-7(3), 6-1, 3-6	Clay
May 26	Roland Garros	Round 1	Francisco Cerundolo	W	7-5, 6-3, 6-4	Clay
May 8	Italian Open	Round 1	Marcos Giron	L	6-3, 3-6, 4-6	Clay
May 1	Madrid Open	Quarterfinal	Lorenzo Musetti	L	4-6, 3-6	Clay
Apr 30	Madrid Open	Round 4	Grigor Dimitrov	W	5-7, 7-6(7), 6-4	Clay
Apr 29	Madrid Open	Round 3	Cameron Norrie	W	2-6, 6-4, 6-4	Clay
Apr 26	Madrid Open	Round 2	Kamil Majchrzak	W	7-5, 4-6, 6-4	Clay
Apr 24	Madrid Open	Round 1	Zizou Bergs	W	6-1, 6-2	Clay
Apr 22	Madrid Open	Qualifying Final	Borna Coric	L	3-6, 6-7(6)	Clay
Apr 21	Madrid Open	Qualifying 1st Round	Nicolas Moreno De Alboran	W	6-3, 6-3	Clay
Apr 13	Barcelona Open	Qualifying Final	Hamad Medjedovic	L	4-6, 4-6	Clay
Apr 12	Barcelona Open	Qualifying 1st Round	Martin Landaluce	W	6-2, 6-4	Clay
Apr 5	Monte-Carlo Masters	Qualifying 1st Round	Corentin Moutet	L	7-5, 4-6, 4-6	Clay
Apr 3	Tiriac Open	Round 2	Sebastian Baez	L	6-7(5), 6-2, 2-6	Clay
Apr 1	Tiriac Open	Round 1	Chun-Hsin Tseng	W	7-6(5), 7-6(2)	Clay
Mar 22	Miami Open	Round 2	Arthur Fils	L	4-6, 3-2 ret. (ret.)	Hard
Mar 20	Miami Open	Round 1	Tomas Martin Etcheverry	W	6-3, 6-0	Hard
Mar 18	Miami Open	Qualifying Final	Brandon Holt	L	4-6, 6-2, 5-7	Hard
Mar 17	Miami Open	Qualifying 1st Round	Yosuke Watanuki	W	6-1, 6-7(3), 6-3	Hard
Mar 7	Indian Wells	Round 2	Arthur Fils	L	2-6, 2-6	Hard
Mar 6	Indian Wells	Round 1	Zhang Zhizhen	W	2-6, 6-2, 7-6(7)	Hard
Feb 25	Abierto Mexicano Telcel presentado por HSBC	Round 1	Tommy Paul	L	2-6, 2-6	Hard
Feb 23	Abierto Mexicano Telcel presentado por HSBC	Qualifying Final	Mattia Bellucci	W	6-1, 6-0	Hard
Feb 22	Abierto Mexicano Telcel presentado por HSBC	Qualifying 1st Round	Rafael Alfonso De Alba Valdes	W	6-1, 6-1	Hard
Jan 15	Australian Open	Round 2	Karen Khachanov	L	6-7(4), 6-4, 3-6, 3-6	Hard
Jan 13	Australian Open	Round 1	Luca Nardi	W	6-7(1), 7-6(3), 5-7, 6-1, 6-2	Hard
Jan 6	ASB Classic	Round 1	Lorenzo Sonego	L	6-7(5), 6-2, 6-7(7)	Hard
Jan 2	Bank of China Hong Kong Tennis Open	Round 2	Lorenzo Musetti	L	4-6, 3-6	Hard

2024: 21-12

Date	Tournament	Round	Opponent	Result	Score	Surface
Dec 31	Bank of China Hong Kong Tennis Open	Round 1	Roberto Carballes Baena	W	4-6, 7-6(4), 7-5	Hard
Dec 29	Bank of China Hong Kong Tennis Open	Qualifying Final	Hugo Grenier	W	4-6, 6-1, 7-5	Hard
Dec 29	Bank of China Hong Kong Tennis Open	Qualifying 1st Round	Ki Lung Ng	W	7-6(2), 6-2	Hard
Oct 20	Almaty Open	Final	Karen Khachanov	L	2-6, 7-5, 3-6	Hard
Oct 19	Almaty Open	Semifinal	Francisco Cerundolo	W	6-4, 6-2	Hard
Oct 18	Almaty Open	Quarterfinal	Alejandro Tabilo	W	3-6, 6-3, 6-4	Hard
Oct 16	Almaty Open	Round 2	Borna Coric	W	7-6(1), 6-4	Hard
Oct 15	Almaty Open	Round 1	Christopher O'Connell	W	7-6(5), 6-2	Hard
Oct 2	Shanghai Masters	Round 1	Alejandro Davidovich Fokina	L	5-7, 6-7(7)	Hard
Oct 1	Shanghai Masters	Qualifying Final	Marco Trungelliti	W	6-3, 7-5	Hard
Sep 30	Shanghai Masters	Qualifying 1st Round	Benjamin Hassan	W	6-0, 7-6(3)	Hard
Aug 31	US Open	Round 3	Tommy Paul	L	7-6(5), 3-6, 1-6, 6-7(3)	Hard

Show 21 more

Aug 29	US Open	Round 2	Arthur Fils	W	7-5, 6-7(3), 6-4, 6-4	Hard
Aug 27	US Open	Round 1	Jaume Munar	W	6-4, 3-6, 6-3, 7-5	Hard
Aug 22	US Open	Qualifying Final	Valentin Royer	W	7-6(3), 6-4	Hard
Aug 21	US Open	Qualifying 2nd Round	Titouan Droguet	W	3-6, 7-5, 6-3	Hard
Aug 19	US Open	Qualifying 1st Round	Sho Shimabukuro	W	4-6, 7-5, 6-3	Hard
Aug 6	National Bank Open	Round 1	Karen Khachanov	L	4-6, 4-6	Hard
Jul 16	Cerity Partners Hall of Fame Open for the Van Alen Cup	Round 1	Billy Harris	L	6-7(4), 5-7	Grass
Jun 26	Wimbledon	Qualifying 2nd Round	Daniel Elahi Galan	L	4-6, 6-7(5)	Grass
Jun 24	Wimbledon	Qualifying 1st Round	Aziz Dougaz	W	6-7(8), 6-1, 7-6(6)	Grass
May 26	Roland Garros	Round 1	Kei Nishikori	L	5-7, 6-7(3), 6-3, 6-1, 5-7	Clay
May 23	Roland Garros	Qualifying Final	Alexander Ritschard	W	2-6, 6-2, 6-3	Clay
May 22	Roland Garros	Qualifying 2nd Round	Marco Trungelliti	W	7-6(6), 3-6, 6-4	Clay
May 20	Roland Garros	Qualifying 1st Round	Genaro Alberto Olivieri	W	7-5, 6-7(4), 6-1	Clay
Mar 30	Fayez Sarofim & Co. U.S. Men's Clay Court Championship	Qualifying 1st Round	Mitchell Krueger	L	6-7(4), 6-7(6)	Clay
Mar 18	Miami Open	Qualifying 1st Round	Sumit Nagal	L	6-7(3), 2-6	Hard
Feb 12	Delray Beach Open	Round 1	Nuno Borges	L	4-6, 6-7(1)	Hard
Feb 11	Delray Beach Open	Qualifying Final	Zachary Svajda	L	4-6, 6-4, 3-6	Hard
Feb 10	Delray Beach Open	Qualifying 1st Round	Valentin Vacherot	W	6-4, 6-4	Hard
Jan 11	Australian Open	Qualifying Final	David Goffin	L	6-3, 3-6, 2-6	Hard
Jan 10	Australian Open	Qualifying 2nd Round	Pierre-Hugues Herbert	W	4-6, 6-4, 7-6(8)	Hard
Jan 8	Australian Open	Group Stage	Pablo Llamas Ruiz	W	7-6(3), 6-1	Hard

2023: 4-10

Date	Tournament	Round	Opponent	Result	Score	Surface
Aug 23	US Open	Qualifying 1st Round	Kimmer Coppejans	L	4-6, 7-5, 6-7(9)	Hard
Aug 9	National Bank Open	Round 2	Alex de Minaur	L	4-6, 5-7	Hard
Aug 8	National Bank Open	Round 1	Daniel Evans	W	7-6(4), 7-5	Hard
Jul 31	Mifel Tennis Open by Telcel Oppo	Round 1	Gijs Brouwer	L	2-6, 6-4, 2-6	Hard
Jul 23	Atlanta Open	Qualifying Final	Jason Jung	L	6-4, 5-7, 6-7(1)	Hard
Jul 22	Atlanta Open	Qualifying 1st Round	Bradley Klahn	W	6-3, 6-2	Hard
Jul 18	Cerity Partners Hall of Fame Open for the Van Alen Cup	Round 1	Kevin Anderson	L	3-6, 2-6	Grass
Jun 28	Wimbledon	Qualifying 2nd Round	Matteo Gigante	L	4-6, 4-6	Grass
Jun 26	Wimbledon	Qualifying 1st Round	Cem Ilkel	W	6-3, 4-6, 6-1	Grass
May 23	Roland Garros	Qualifying 1st Round	Timofey Skatov	L	4-6, 6-7(6)	Clay
Feb 8	Nexo Dallas Open	Round 1	Emilio Gomez	L	4-6, 7-6(5), 6-7(5)	Hard
Feb 6	Nexo Dallas Open	Qualifying Final	Brandon Holt	L	6-7(8), 6-7(5)	Hard

Show 2 more

Feb 5	Nexo Dallas Open	Qualifying 1st Round	Antonio Muniz Hidalgo	W	6-4, 6-3	Hard
Jan 9	Australian Open	Qualifying 1st Round	Aleksandar Vukic	L	3-6, 4-6	Hard

2022: 1-1

Date	Tournament	Round	Opponent	Result	Score	Surface
Aug 7	National Bank Open	Qualifying Final	Hugo Gaston	L	2-6, 1-2 ret. (ret.)	Hard
Aug 6	National Bank Open	Qualifying 1st Round	James Duckworth	W	6-3, 7-6(5)	Hard

How he is doing nowThrough Oct 18

2026 record9-18clay 1-5, hard 5-9, grass 3-4

Last 105-5LWLWLLWLWWNewest first. Lost his last match.

Agatha on Gabriel Diallo

Every graded call Agatha sealed on his matches since Oct 1, 2026, newest first. Each is 1 unit at its sealed price; the number opens its receipt.

Record2-0Units+1.84u2 graded calls

Date	Match	Call	Price	Result	Units	Receipt
Oct 17	vs Rei Sakamoto	LEANRei Sakamoto to win	-118	WON	+0.85u	#1288
Oct 16	vs Harold Mayot	LEANGabriel Diallo to win	-101	WON	+0.99u	#1141

CareerPro since 2023

3years2023 to 2026

2023First ATP matchLost to Emilio Gomez, Nexo Dallas Open
2025First titleLibema Open
2025Career high No. 33Aug 18, 2025
Aug 4, 2026Latest matchLost to Luciano Darderi, National Bank Open

Grand Slam titles

AO0Round 2 (2025)2-2 in our records

RG0Round 2 (2025)1-3 in our records

WIM0Round 2 (2026)2-2 in our records

USO0Round 3 (2024)3-2 in our records

Titles by season

20251

1 title from 2 finals in our records

First ATP match

Feb 8, 2023: lost to Emilio Gomez 4-6, 7-6, 6-7Nexo Dallas Open, on hard

Latest match

Aug 4, 2026: lost to Luciano Darderi 4-6, 3-2 ret.National Bank Open, Round 2, on hard court

Challenger and ITF finals

Challenger: 4 singles finals, 3 won; 1 doubles final, 1 won. ITF: 4 singles finals, 2 won; 1 doubles final. From 2019 to 2024.

Singles

W
Jul 2024Won the title at Chicago Men's Challenger, US (hard), beating Bu Yunchaokete 6-3, 7-6(7-3).
W
Oct 2023Won the title at Slovak Open, Slovakia (indoor hard), beating Joris De Loore 6-0, 7-5.
W
Mar 2023Won the title at M25 Montreal, Canada (indoor hard), beating Henri Squire 7-6(7-5), 6-3.
L
Oct 2022Runner-up at Fairfield Challenger, US (hard), losing to Michael Mmoh 3-6, 2-6.
W
Aug 2022Won the title at Championnats de Granby, Canada (hard), beating Shang Juncheng 7-5, 7-6(7-5).
W
Jun 2022Won the title at M25 East Lansing, US (hard), beating Andres Martin 6-3, 7-6(7-4).
L
Nov 2021Runner-up at M15 East Lansing, US (hard), losing to Raymond Sarmiento 6-4, 3-6, 4-6.
L
Jun 2021Runner-up at M15 Champaign, US (hard), losing to Jason Kubler 2-6, 1-6.

Doubles

W
Aug 2023Won the title at Winnipeg Challenger, Canada (hard) with Leandro Riedi, beating Taha Baadi and Juan Carlos Aguilar 6-2, 6-3.
L
Nov 2019Runner-up at M15 East Lansing, US (hard) with Millen Hurrion, losing to Jacob Dunbar and David Fox 4-6, 6-7(3-7).