Gauthier Onclin (born 26 February 2001) is a Belgian professional

tennis Tennis is a List of racket sports, racket sport that is played either individually against a single opponent (singles (tennis), singles) or between two teams of two players each (doubles (tennis), doubles). Each player uses a tennis racket st ...

player who plays mainly on the

ATP Challenger Tour The ATP Challenger Tour (known until the end of 2008 as the ATP Challenger Series) is a series of international men's professional tennis tournaments. It was founded in 1976 as a replacement for the ILTF Satellite Circuit (founded in 1971) as ...

. He has a career-high ranking of world No. 192, achieved on 5 May 2025.

Career

2023: ATP debut in doubles

In January, Onclin reached the semifinals of the 2023 BW Open in

Ottignies-Louvain-la-Neuve Ottignies-Louvain-la-Neuve (; ) is a city and municipality of Wallonia located in the Belgian province of Walloon Brabant. On January 1, 2006, Ottignies-Louvain-la-Neuve had a total population of 29,521. The total area is 32.96 km2 which giv ...

where he lost to eventual champion and compatriot

David Goffin David Goffin (; born 7 December 1990) is a Belgian professional tennis player. He reached a career-high singles ATP rankings, ranking of world No. 7, making him the highest ranked male player from Belgium in tennis history. He is also the first ...

. In May, he defeated the higher-ranked

Elias Ymer Elias Ymer (born 10 April 1996) is a Swedish tennis player. Ymer has a career high Association of Tennis Professionals, ATP singles ranking of World No. 105, achieved on 11 June 2018. He has a career high ATP doubles ranking of World No. 188, ac ...

at a Challenger event in

Bordeaux Bordeaux ( ; ; Gascon language, Gascon ; ) is a city on the river Garonne in the Gironde Departments of France, department, southwestern France. A port city, it is the capital of the Nouvelle-Aquitaine region, as well as the Prefectures in F ...

in the first round. At the

2023 French Open The 2023 French Open was a Grand Slam (tennis), Grand Slam tennis tournament played on outdoor clay courts. It was held at the Stade Roland Garros in Paris, France, from 28 May to 11 June 2023, comprising singles, doubles and mixed doubles play. ...

he defeated

Nicholas David Ionel Nicholas David Ionel (born 12 October 2002) is a Romanian professional tennis player. He has a career high ATP singles ranking of No. 184 achieved on 12 June 2023. He also has a career high ATP doubles ranking of No. 356 achieved on 24 April 202 ...

in straight sets in the first round of qualifying before losing to Argentine

Thiago Agustin Tirante Thiago is the Portuguese equivalent of the names Jacob and James. It is the archaic spelling of the name Tiago, presently mostly used in Brazil; in Portugal, the modern spelling largely prevails. It is also very popular in Argentina. * Thiago (f ...

in three sets. Onclin got his revenge over the Argentine in the qualifying at the

2023 Wimbledon Championships The 2023 Wimbledon Championships was a Grand Slam (tennis), major tennis tournament that took place at the All England Lawn Tennis and Croquet Club in Wimbledon, London, United Kingdom. Tournament The tournament was played on grass courts, wi ...

, 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 The COVID-19 pandemic (also known as the coronavirus pandemic and COVID pandemic), caused by severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), began with an disease outbreak, outbreak of COVID-19 in Wuhan, China, in December ...

. In October, he received a wildcard in doubles for the European Open in

Antwerp Antwerp (; ; ) is a City status in Belgium, city and a Municipalities of Belgium, municipality in the Flemish Region of Belgium. It is the capital and largest city of Antwerp Province, and the third-largest city in Belgium by area at , after ...

, alongside compatriot

Michael Geerts Michael Geerts (born 17 January 1995) is a Belgian tennis player. He has a career high ATP singles ranking of world No. 212 achieved on 3 April 2023. He also has a career high ATP doubles ranking of No. 162 achieved on 17 October 2022. Geerts c ...

. At the same tournament, in the qualifying singles competition, he defeated higher-ranked American

Maxime Cressy Maxime Cressy (born May 8, 1997) is a French-American professional tennis player. He has a career-high singles ranking of world No. 31 by the ATP, achieved on 8 August 2022. He has been ranked as high as world No. 64 in doubles, achieved on 8 M ...

2024: Maiden Challenger final

In May, Onclin reached his first Challenger final at the

Prague Open In tennis, Prague Open may refer to: * Prague Open (1987–1999) * 1992 HTC Prague Open, HTC Prague Open, held only in 1992 * BVV Prague Open (1993–1994) * I.ČLTK Prague Open, Advantage Cars Prague Open * WTA Prague Open, Livesport Prague Open * ...

. He lost to the former world No. 35

Jiří Veselý Jiří Veselý (; born 10 July 1993) is a Czech professional tennis player. He reached a career-high singles ranking of world No. 35 on 27 April 2015. Youth career Veselý reached the No. 1 junior combined world ranking in January 2011, co ...

. 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 Frederico Ferreira "Kiko" Silva (; born 18 March 1995) is a Portuguese tennis player who currently competes mainly on the ATP Challenger Tour. On May 24, 2021, Silva reached a career singles high ranking of No. 168. He also reached a career-hig ...

but winning the second at the Vale do Lobo Open III. 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.

2025: Grand Slam debut

He started the season by increasing his 2024 winning streak to 13 matches after he made it through the qualifications at the

2025 Australian Open The 2025 Australian Open was a Grand Slam (tennis), Grand Slam level tennis tournament held at Melbourne Park from 12 to 26 January 2025. It was the 113th edition of the Australian Open, the 57th in the Open Era, and the first Grand Slam (tenn ...

into the main draw for his Grand Slam debut, defeating Roman Andres Burruchaga and Americans Aleksandar Kovacevic and

Mackenzie McDonald Michael Mackenzie Lowe McDonald (born April 16, 1995) is an American professional tennis player. He has a career-high singles ATP rankings, ranking of world No. 37, achieved on October 16, 2023 and a doubles ranking of No. 49, achieved on Octobe ...

Performance timeline

Singles

ATP Challenger Tour finals

Singles: 1 (1 runner-up)

References

External links

* * {{DEFAULTSORT:Onclin, Gauthier 2001 births Living people Belgian male tennis players Tennis players from Liège 21st-century Belgian sportsmen