Gauthier Onclin

Gauthier Onclin
Country (sports) Belgium
Born (2001-02-26) 26 February 2001
Liege, Belgium[1]
Height1.80 m (5 ft 11 in)
Turned pro2022
PlaysRight-handed (two-handed backhand)
CoachSteve Darcis
Prize moneyUS $598,617
Singles
Career record1–2
Career titles0
Highest rankingNo. 182 (25 May 2026)
Current rankingNo. 186 (8 June 2026)[2]
Grand Slam singles results
Australian Open1R (2025)
French OpenQ2 (2023)
WimbledonQ2 (2023, 2025)
US OpenQ2 (2023)
Doubles
Career record0–1
Career titles0
Highest rankingNo. 827 (12 April 2021)
Current rankingNo. 1,435 (25 May 2026)
Last updated on: 25 May 2026.

Gauthier Onclin (born 26 February 2001) is a Belgian professional tennis player. He has a career-high ATP singles ranking of No. 182 achieved on 25 May 2026 and a doubles ranking of No. 827 achieved on 12 April 2021.[3][4] Onclin plays mostly on the ATP Challenger Tour, where he has won two singles titles.

Career

2023: ATP debut in doubles

In January, Onclin reached the semifinals of the 2023 BW Open in Ottignies-Louvain-la-Neuve where he lost to eventual champion and compatriot David Goffin.[5]

In May, he defeated the higher-ranked Elias Ymer at a Challenger event in Bordeaux in the first round.[6] At the 2023 French Open he defeated Nicholas David Ionel in straight sets in the first round of qualifying before losing to Argentine Thiago Agustin Tirante in three sets.[7] Onclin got his revenge over the Argentine in the qualifying at the 2023 Wimbledon Championships, winning in straight sets during his first ever grass-court summer, as his junior years coincided with the grass-court portion of the Tour cancellation due to the COVID-19 pandemic.[8]

In October, he received a wildcard in doubles for the European Open in Antwerp, alongside compatriot Michael Geerts.[9] At the same tournament, in the qualifying singles competition, he defeated higher-ranked American Maxime Cressy.[10]

2024: Maiden Challenger final

In May, Onclin reached his first Challenger final at the Prague Open. He lost to the former world No. 35 Jiří Veselý.[11][12] In October and November 2024 he reached two M25 finals in Portugal where he faced the same opponent, losing the first to Frederico Ferreira Silva but winning the second at the Vale do Lobo Open III.[13] He closed out 2024 with a second title in two weeks, and 12th ITF title, winning the M25 in Monastir, Tunisia, recording 10 consecutive victories on the ITF circuit.[14]

2025: Grand Slam and top 200 debuts

Onclin started the season by increasing his 2024 winning streak to 13 matches[15] after he made it through the qualifying rounds at the Australian Open into the main draw for his Grand Slam debut, defeating Roman Andres Burruchaga and Americans Aleksandar Kovacevic and Mackenzie McDonald.[16][17] Despite winning the opening set, he lost to Reilly Opelka in the first round.[18]

2026: First Challenger titles, first ATP win

As top seed, Onclin won his first ATP Challenger title at the Ivory Coast Open, defeating Hamish Stewart in the final in two tiebreak sets.[19] The following week, he claimed his second Challenger title by overcoming Michael Mmoh in the final of the Ivory Coast Open 2 in straight sets.[20]

In June, ranked No. 186, Onclin earned his first ATP Tour win at the Stuttgart Open as a qualifier, by defeating Fábián Marozsán. He lost to Giovanni Mpetshi Perricard in the second round.[21][22]

Performance timeline

Key
W  F  SF QF #R RR Q# DNQ A NH
(W) winner; (F) finalist; (SF) semifinalist; (QF) quarterfinalist; (#R) rounds 4, 3, 2, 1; (RR) round-robin stage; (Q#) qualification round; (DNQ) did not qualify; (A) absent; (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.

Singles

Current through the 2026 Australian Open.

Tournament 2023 2024 2025 2026 SR W–L Win %
Grand Slam
Australian Open A Q1 1R Q1 0 / 1 0–1 0%
French Open Q2 A Q1 A 0 / 0 0–0  – 
Wimbledon Q2 A Q2 0 / 0 0–0  – 
US Open Q2 A Q1 0 / 0 0–0  – 
Win–loss 0–0 0–0 0–1 0–0 0 / 1 0–1 0%
ATP Masters 1000
Indian Wells Masters A A A A 0 / 0 0–0  – 
Miami Open A A A A 0 / 0 0–0  – 
Monte Carlo Masters A A A A 0 / 0 0–0  – 
Madrid Open A A A A 0 / 0 0-0  – 
Italian Open A A A A 0 / 0 0–0  – 
Canadian Open A A A 0 / 0 0–0  – 
Cincinnati Masters A A A 0 / 0 0–0  – 
Shanghai Masters A A Q1 0 / 0 0–0  – 
Paris Masters A A A 0 / 0 0–0  – 
Win–loss 0–0 0–0 0–0 0–0 0 / 0 0–0  – 

ATP Challenger Tour finals

  Challenger

Singles: 3 (2 titles, 1 runner-up)

Finals by surface
Hard (2–0)
Clay (0–1)
Result W–L    Date    Tournament Surface Opponent Score
Loss 0–1 May 2024 Prague Open, Czech Republic Clay Jiří Veselý 2–6, 6–3, 6–7(3–7)
Win 1–1 Apr 2026 Côte d'Ivoire Open, Ivory Coast Hard Hamish Stewart 7–6(7–5), 7–6(7–2)
Win 2–1 May 2026 Côte d'Ivoire Open II, Ivory Coast (2) Hard Michael Mmoh 6–3, 6–4

References

  1. ^ "Challenger de Regione Abruzzo: le Liégeois Raphael Collignon rejoint son pote Gauthier Onclin en quarts de finale". Lavenir (in French). 20 April 2023. Retrieved 25 May 2023.
  2. ^ "Belgium Rankings (Singles)". ATP Tour. Retrieved 8 April 2026.
  3. ^ "Gauthier Onclin". ATP Tour. Retrieved 24 May 2023.
  4. ^ "Gauthier Onclin". itftennis. Retrieved 24 May 2023.
  5. ^ Thomoson, Grant (27 January 2023). "Goffin Leads Belgium's Star-Studded Challenger". Retrieved 24 May 2023.
  6. ^ "Challenger de Bordeaux : Gauthier Onclin écarte Elias Ymer et retrouvera Ugo Humbert au 2e tour". Lavenir (in French). 16 May 2023. Retrieved 24 May 2023.
  7. ^ "Gauthier Onclin". Roland Garros. Retrieved 28 June 2023.
  8. ^ "Gauthier Onclin, au 2e tour des qualifs à Wimbledon : "Je n'avais jamais joué sur gazon auparavant"". Lavenir (in French). 26 June 2023. Retrieved 28 June 2023.
  9. ^ Mulders, Johan (15 October 2023). "Zizou Bergs dubbelt met Tibo Colson in Antwerpen". fan2.be (in Dutch). Retrieved 15 October 2023.
  10. ^ "BLOCKX, BAILLY AND ONCLIN ONE STEP CLOSER TO MAIN DRAW AFTER WINS". Europeanopen.be. 15 October 2023. Retrieved 16 October 2023.
  11. ^ "Challenger de Prague - Gauthier Onclin battu pour sa première finale sur le circuit Challenger". dhnet.be (in French). 12 May 2024.
  12. ^ "Bu, 22, makes Chinese tennis history; Pouille returns to Challenger titletown". ATPTour. Retrieved 22 January 2025.
  13. ^ "Portuguese Frederico Silva defeated in the final of the Vale do Lobo Open III". Sulinformacao.pt. 24 November 2024. Retrieved 9 January 2025.
  14. ^ "ITF Monastir - Gauthier Onclin remporte son 12e titre ITF et le second en deux semaines". lalibre (in French). 1 December 2024. Retrieved 9 January 2025.
  15. ^ "GO Activity".
  16. ^ "Exploit à l'Open d'Australie : Gauthier Onclin qualifié pour la première fois pour le tableau final d'un Grand Chelem". dhnet.be (in French). 9 January 2025. Retrieved 9 January 2025.
  17. ^ "Fonseca, Tien, Landaluce make history with Australian Open qualifying success". ATPTour. 9 January 2025.
  18. ^ "Australian Open: Resurgent Opelka recovers against Onclin to make second round". Tennis Majors. Retrieved 27 April 2026.
  19. ^ "Challenger d'Abidjan: Gauthier Onclin remporte son premier titre sur le circuit" (in French). DHNet. Retrieved 27 April 2026.
  20. ^ "Gauthier Onclin (re) commence à Ivoire plus clair : 2e trophée à Abidjan pour le Belge qui atteindra son meilleur classement" (in French). RTBF. Retrieved 4 May 2026.
  21. ^ "Giovanni Mpetshi Perricard rallie les quarts de finale à Stuttgart après son succès face à Gauthier Onclin" (in French). L'Equipe. 10 June 2026. Retrieved 10 June 2026.
  22. ^ "Bellucci sets potential Fritz clash in Stuttgart, Bublik advances". ATPTour. 10 June 2026.
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