| Challenger Ostrava | 04/24 08:00 | 26 | [205] Dennis Novak v Gauthier Onclin [276] | 7-6,6-2 | |
| Challenger Ostrava | 04/23 09:45 | 25 | [265] Dimitar Kuzmanov v Gauthier Onclin [276] | 5-7,6-7 | |
| Challenger Oeiras | 04/16 11:45 | 25 | [158] Jesper De Jong v Gauthier Onclin [269] | 6-3,6-2 | |
| Challenger Oeiras | 04/15 09:30 | 19 | [245] Maks Kasnikowski v Gauthier Onclin [269] | 6-7,3-6 | |
| Challenger Oeiras | 04/14 11:50 | 14 | [451] Miguel Damas v Gauthier Onclin [268] | 4-6,1-6 | |
| ITF - Saint Dizier M25 | 03/31 13:00 | 29 | [262] Alibek Kachmazov v Gauthier Onclin [279] | 6-3,6-7,5-7 | |
| ITF - Saint Dizier M25 | 03/30 15:10 | 28 | Buvaysar Gadamauri v Gauthier Onclin | 4-6,1-6 | |
| ITF - Saint Dizier M25 | 03/29 14:00 | 27 | [423] Sascha Gueymard Wayenburg v Gauthier Onclin [279] | 6-3,3-6,2-6 | |
| ITF - Saint Dizier M25 | 03/28 16:35 | 26 | Boris Fassbender v Gauthier Onclin | 3-6,3-6 | |
| ITF - Saint Dizier M25 | 03/27 10:25 | 25 | Adan Freire Da Silva v Gauthier Onclin | 3-6,1-6 | |
| ITF - Toulouse M25 | 03/22 14:10 | 27 | [279] Gauthier Onclin v Raphael Collignon [436] | 4-6,5-7 | |
| ITF - Toulouse M25 | 03/21 15:40 | 26 | Gauthier Onclin v Alexey Vatutin | 6-3,4-6,6-2 | |
| ITF - Toulouse M25 | 03/20 15:30 | 25 | [279] Gauthier Onclin v Antoine Hoang [495] | 6-1,6-2 | |
| ITF - Creteil M25 | 03/15 10:55 | 27 | Alexey Vatutin v Gauthier Onclin | 6-3,6-1 | |
| ITF - Creteil M25 | 03/14 10:00 | 26 | [169] Neil Oberleitner v Gauthier Onclin [264] | 4-6,6-2,2-6 | |
| ITF - Creteil M25 | 03/12 18:05 | 25 | Adrien Gobat v Gauthier Onclin | 4-6,6-1,4-6 | |
| Challenger New Delhi | 02/27 14:15 | 25 | [267] Gauthier Onclin v Adam Walton [145] | 4-6,0-6 | |
| Challenger Pune | 02/19 13:00 | 25 | [235] Tung-Lin Wu v Gauthier Onclin [252] | 7-6,6-7,6-3 | |
| Challenger Bengaluru | 02/15 06:30 | 26 | [153] Adam Walton v Gauthier Onclin [252] | 6-2,6-2 | |
| Challenger Bengaluru | 02/12 10:30 | 25 | [277] Giovanni Fonio v Gauthier Onclin [252] | 4-6,6-1,6-7 | |
| Challenger Ottignies | 01/25 15:30 | 26 | [250] Leandro Riedi v Gauthier Onclin [218] | 7-5,6-3 | |
| Challenger Ottignies | 01/24 16:10 | 25 | [184] Denis Yevseyev v Gauthier Onclin [218] | 4-6,4-6 | |
| Challenger Nonthaburi | 01/18 05:55 | 26 | [218] Gauthier Onclin v Matteo Gigante [171] | 2-6,7-6,2-6 | |
| Challenger Nonthaburi | 01/16 07:00 | 25 | [218] Gauthier Onclin v Clement Tabur [233] | 6-4,6-3 | |
| Australian Open | 01/10 05:15 | 14 | [103] Aleksandar Kovacevic v Gauthier Onclin [220] | 6-3,6-7,7-6 | |
| Challenger Nonthaburi | 01/04 03:30 | 27 | [231] Gauthier Onclin v Lucas Pouille [329] | 3-6,2-6 | |
| Challenger Nonthaburi | 01/03 03:00 | 26 | [251] Evgeny Donskoy v Gauthier Onclin [231] | 3-6,3-6 | |
| Challenger Nonthaburi | 01/01 08:45 | 25 | [231] Gauthier Onclin v Yasutaka Uchiyama [269] | 7-5,6-2 | |
| Challenger Danderyd | 11/16 09:00 | 26 | Gauthier Onclin v Flavio Cobolli | Walkover | |
| Challenger Danderyd | 11/14 17:15 | 25 | [380] Leo Borg v Gauthier Onclin [227] | 6-2,4-6,0-6 |
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.