| Challenger de Cherbourg | 02/13 12:50 | 19 | [263] Gauthier Onclin v Matteo Martineau [373] | 6-4,6-3 | |
| Challenger de Cherbourg | 02/12 20:20 | 14 | [263] Gauthier Onclin v Charles Broom [376] | 6-2,6-4 | |
| Challenger de Coblenza | 01/29 10:20 | 14 | Gauthier Onclin v Jeremy Jahn | Cancelled | |
| Challenger de Ottignies | 01/28 16:45 | 28 | [50] David Goffin v Gauthier Onclin [338] | 7-6,6-2 | |
| Challenger de Ottignies | 01/27 19:30 | 27 | [338] Gauthier Onclin v Kaichi Uchida [198] | 6-3,6-3 | |
| Challenger de Ottignies | 01/26 15:00 | 26 | [338] Gauthier Onclin v Ernests Gulbis [314] | 6-7,6-2,6-3 | |
| Challenger de Ottignies | 01/25 18:30 | 25 | [106] Ugo Humbert v Gauthier Onclin [338] | 5-7,1-6 | |
| Challenger de Ottignies | 01/24 12:15 | 19 | [381] Ergi Kirkin v Gauthier Onclin [338] | 1-6,6-7 | |
| Challenger de Ottignies | 01/23 19:00 | 14 | Sumit Nagal v Gauthier Onclin | 2-6,6-2,5-7 | |
| ITF M15 Bressuire | 01/22 14:30 | 29 | Gauthier Onclin v Lucas Poullain | 7-5,6-3 | |
| ITF M15 Bressuire | 01/21 16:15 | 28 | Gauthier Onclin v Antoine Ghibaudo | 6-2,6-2 | |
| ITF M15 Bressuire | 01/20 14:25 | 27 | Gauthier Onclin v Adrien Gobat | 7-6,6-1 | |
| ITF M15 Bressuire | 01/19 13:00 | 26 | Gauthier Onclin v Philip Florig | 6-3,6-2 | |
| ITF M15 Bressuire | 01/18 09:00 | 25 | Gauthier Onclin v Maik Steiner | 7-5,7-5 | |
| Challenger de Maia | 11/29 12:30 | 25 | [339] Gauthier Onclin v Evgeny Karlovskiy [331] | 2-6,0-6 | |
| Challenger de Maia | 11/28 13:10 | 19 | [339] Gauthier Onclin v Jaime Faria [364] | 6-0,2-6,6-2 | |
| Challenger de Maia | 11/27 14:10 | 14 | Gauthier Onclin v Francisco Rocha | 6-0,6-3 | |
| Challenger de Helsinki | 11/13 09:00 | 14 | [47] Alexander Erler v Gauthier Onclin [331] | 7-6,7-6 | |
| ITF M25 Monastir | 11/04 11:10 | 27 | [338] Gauthier Onclin v Jurgen Briand [410] | 7-6,0-6,2-6 | |
| ITF M25 Monastir | 11/03 12:10 | 26 | Gauthier Onclin v Adria S Barrera | 6-4,6-1 | |
| ITF M25 Monastir | 11/02 11:40 | 25 | Gauthier Onclin v Jules Marie | 3-6,6-3,6-4 | |
| ITF M25 Monastir | 10/30 11:25 | 29 | [342] Gauthier Onclin v Mathys Erhard [403] | 6-7,6-7 | |
| ITF M25 Monastir | 10/29 09:30 | 28 | [342] Gauthier Onclin v Ugo Blanchet [340] | 6-4,6-2 | |
| ITF M25 Monastir | 10/28 09:30 | 27 | [249] Skander Mansouri v Gauthier Onclin [342] | 7-5,1-6,5-7 | |
| ITF M25 Monastir | 10/27 09:40 | 26 | [485] Eliakim Coulibaly v Gauthier Onclin [342] | 4-6,2-6 | |
| ITF M25 Monastir | 10/25 09:50 | 25 | Andrej Krajcik v Gauthier Onclin | 1-6,1-6 | |
| ITF M25 Rodez | 10/15 13:30 | 28 | Gauthier Onclin v Alexis Gautier | 2-6,4-6 | |
| ITF M25 Rodez | 10/14 09:30 | 27 | [437] Sascha Gueymard Wayenburg v Gauthier Onclin [401] | 3-6,3-6 | |
| ITF M25 Rodez | 10/13 09:20 | 26 | Gregoire Jacq v Gauthier Onclin | Retired | |
| ITF M25 Rodez | 10/12 07:30 | 25 | Nazim Makhlouf v Gauthier Onclin | 4-6,6-7 |
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.