| ITF M25 Nevers | 10/09 12:30 | 29 | [322] Raphael Collignon v Gauthier Onclin [396] | 3-6,6-2,3-6 | |
| ITF M25 Nevers | 10/08 12:00 | 28 | [429] Sascha Gueymard Wayenburg v Gauthier Onclin [396] | 3-6,4-6 | |
| ITF M25 Nevers | 10/07 09:55 | 27 | Arthur Reymond v Gauthier Onclin | 4-6,2-6 | |
| ITF M25 Nevers | 10/06 15:05 | 26 | Simon Reveniau v Gauthier Onclin | 2-6,2-6 | |
| ITF M25 Nevers | 10/04 12:55 | 25 | Hugo Pontico v Gauthier Onclin | 2-6,4-6 | |
| ITF M15 Zlatibor | 09/18 09:00 | 29 | Gauthier Onclin v Ilya Snitari | 6-1,6-4 | |
| ITF M15 Zlatibor | 09/17 08:00 | 28 | Gauthier Onclin v Stefan Popovic | 6-2,6-2 | |
| ITF M15 Zlatibor | 09/16 09:55 | 27 | Gauthier Onclin v Luka Pavlovic | 6-4,6-2 | |
| ITF M15 Zlatibor | 09/15 11:00 | 26 | Gauthier Onclin v Jaka Protic Zakelj | 6-2,6-1 | |
| ITF M15 Zlatibor | 09/14 08:00 | 25 | Gauthier Onclin v Gian Marco Ortenzi | 6-1,7-5 | |
| ITF M15 Haren | 08/30 18:00 | 25 | Jarno Jans v Gauthier Onclin | 7-6,6-4 | |
| ITF M15 Lambermont | 08/27 15:00 | 28 | Gauthier Onclin v Simon Beaupain | 3-6,6-2,3-6 | |
| ITF M15 Lambermont | 08/26 15:00 | 27 | Gauthier Onclin v Thomas Deschamps | 6-2,6-2 | |
| ITF M15 Lambermont | 08/25 12:10 | 26 | Gauthier Onclin v Victor Ernaelsteen | 6-1,6-3 | |
| ITF M15 Lambermont | 08/23 15:00 | 25 | Gauthier Onclin v Olivier Rojas | 6-2,6-4 | |
| ITF M25 Koksijde | 08/17 13:00 | 25 | Arnaud Bovy v Gauthier Onclin | 3-6,6-4,6-1 | |
| Challenger Meerbusch | 08/08 09:00 | 19 | [317] Alexey Vatutin v Gauthier Onclin [413] | 4-6,6-4,6-1 | |
| Challenger Meerbusch | 08/07 09:00 | 14 | [413] Gauthier Onclin v Alexis Gautier [384] | 7-5,7-6 | |
| ITF M25 Wetzlar | 08/04 11:00 | 26 | Jan Choinski v Gauthier Onclin | 6-3,3-6,6-1 | |
| ITF M25 Wetzlar | 08/03 08:30 | 25 | [413] Gauthier Onclin v Clement Tabur [362] | 6-3,6-0 | |
| ITF M25 Esch/Alzette | 07/19 09:30 | 25 | Gauthier Onclin v Chris Rodesch | 3-6,4-6 | |
| Challenger Amersfoort | 07/11 09:00 | 45 | [426] Gauthier Onclin v Martin Krumich [429] | 7-5,5-7,1-6 | |
| Challenger Amersfoort | 07/10 09:00 | 45 | [351] Mats Rosenkranz v Gauthier Onclin [469] | 4-6,5-7 | |
| ITF M25 Marburg | 07/06 12:20 | 25 | Alex Barrena v Gauthier Onclin | 6-3,6-3 | |
| ITF M25 Arlon | 06/26 13:30 | 29 | Raphael Collignon v Gauthier Onclin | 6-4,6-1 | |
| ITF M25 Arlon | 06/25 13:30 | 28 | Simon Beaupain v Gauthier Onclin | 6-7,2-6 | |
| ITF M25 Arlon | 06/24 10:55 | 27 | Gauthier Onclin v Alexander Hoogmartens | 6-2,2-6,7-6 | |
| ITF M25 Arlon | 06/23 08:00 | 26 | Gauthier Onclin v Franco Roncadelli | 6-2,6-0 | |
| ITF M25 Arlon | 06/22 17:25 | 25 | Gauthier Onclin v Ronan Joncour | 6-3,6-3 | |
| ITF M15 Duffel | 06/19 09:00 | 29 | Gauthier Onclin v Chris Rodesch | 6-4,6-3 |
Wikipedia - Gauthier Onclin
Gauthier Onclin (born 26 February 2001) is a Belgian tennis player. He has a career high ranking of 184 achieved on September 18, 2023.
History
2023
In January 2023 Onclin reached the semifinals of the 2023 BW Open in Mons where he lost to eventual champion and compatriot David Goffin. In May 2023 he beat the higher-ranked Elias Ymer at a challenger event in Bordeaux. 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. 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 cancellation due to the COVID-19 pandemic.
In October 2023, he received a wildcard in doubles for the European Open in Antwerp, alongside compatriot Michael Geerts. At the same tournament, in the qualifying singles competition, he defeated higher-ranked American Maxime Cressy.