| Challenger Cherbourg | 02/14 11:55 | 25 | [266] Kacper Zuk v Gauthier Onclin [263] | 5-7,6-3,6-4 | |
| Challenger Cherbourg | 02/13 12:50 | 19 | [263] Gauthier Onclin v Matteo Martineau [373] | 6-4,6-3 | |
| Challenger Cherbourg | 02/12 20:20 | 14 | [263] Gauthier Onclin v Charles Broom [376] | 6-2,6-4 | |
| Challenger Koblenz | 01/29 10:20 | 14 | Gauthier Onclin v Jeremy Jahn | Cancelled | |
| Challenger Ottignies | 01/28 16:45 | 28 | [50] David Goffin v Gauthier Onclin [338] | 7-6,6-2 | |
| Challenger Ottignies | 01/27 19:30 | 27 | [338] Gauthier Onclin v Kaichi Uchida [198] | 6-3,6-3 | |
| Challenger Ottignies | 01/26 15:00 | 26 | [338] Gauthier Onclin v Ernests Gulbis [314] | 6-7,6-2,6-3 | |
| Challenger Ottignies | 01/25 18:30 | 25 | [106] Ugo Humbert v Gauthier Onclin [338] | 5-7,1-6 | |
| Challenger Ottignies | 01/24 12:15 | 19 | [381] Ergi Kirkin v Gauthier Onclin [338] | 1-6,6-7 | |
| Challenger Ottignies | 01/23 19:00 | 14 | Sumit Nagal v Gauthier Onclin | 2-6,6-2,5-7 | |
| ITF - Bressuire M15 | 01/22 14:30 | 29 | Gauthier Onclin v Lucas Poullain | 7-5,6-3 | |
| ITF - Bressuire M15 | 01/21 16:15 | 28 | Gauthier Onclin v Antoine Ghibaudo | 6-2,6-2 | |
| ITF - Bressuire M15 | 01/20 14:25 | 27 | Gauthier Onclin v Adrien Gobat | 7-6,6-1 | |
| ITF - Bressuire M15 | 01/19 13:00 | 26 | Gauthier Onclin v Philip Florig | 6-3,6-2 | |
| ITF - Bressuire M15 | 01/18 09:00 | 25 | Gauthier Onclin v Maik Steiner | 7-5,7-5 | |
| Challenger Maia | 11/29 12:30 | 25 | [339] Gauthier Onclin v Evgeny Karlovskiy [331] | 2-6,0-6 | |
| Challenger Maia | 11/28 13:10 | 19 | [339] Gauthier Onclin v Jaime Faria [364] | 6-0,2-6,6-2 | |
| Challenger Maia | 11/27 14:10 | 14 | Gauthier Onclin v Francisco Rocha | 6-0,6-3 | |
| Challenger Helsinki | 11/13 09:00 | 14 | [47] Alexander Erler v Gauthier Onclin [331] | 7-6,7-6 | |
| ITF - Monastir M25 | 11/04 11:10 | 27 | [338] Gauthier Onclin v Jurgen Briand [410] | 7-6,0-6,2-6 | |
| ITF - Monastir M25 | 11/03 12:10 | 26 | Gauthier Onclin v Adria S Barrera | 6-4,6-1 | |
| ITF - Monastir M25 | 11/02 11:40 | 25 | Gauthier Onclin v Jules Marie | 3-6,6-3,6-4 | |
| ITF - Monastir M25 | 10/30 11:25 | 29 | [342] Gauthier Onclin v Mathys Erhard [403] | 6-7,6-7 | |
| ITF - Monastir M25 | 10/29 09:30 | 28 | [342] Gauthier Onclin v Ugo Blanchet [340] | 6-4,6-2 | |
| ITF - Monastir M25 | 10/28 09:30 | 27 | [249] Skander Mansouri v Gauthier Onclin [342] | 7-5,1-6,5-7 | |
| ITF - Monastir M25 | 10/27 09:40 | 26 | [485] Eliakim Coulibaly v Gauthier Onclin [342] | 4-6,2-6 | |
| ITF - Monastir M25 | 10/25 09:50 | 25 | Andrej Krajcik v Gauthier Onclin | 1-6,1-6 | |
| ITF - Rodez M25 | 10/15 13:30 | 28 | Gauthier Onclin v Alexis Gautier | 2-6,4-6 | |
| ITF - Rodez M25 | 10/14 09:30 | 27 | [437] Sascha Gueymard Wayenburg v Gauthier Onclin [401] | 3-6,3-6 | |
| ITF - Rodez M25 | 10/13 09:20 | 26 | Gregoire Jacq v Gauthier Onclin | Retired |
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.