| 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 | |
| Challenger - Helsinki | 11/06 13:35 | 19 | [228] Gauthier Onclin v Maximilian Neuchrist [258] | 5-7,4-6 | |
| Challenger - Helsinki | 11/05 10:30 | 14 | Gauthier Onclin v Markus Molder | 6-0,6-4 | |
| Challenger - Bergamo | 10/31 09:00 | 25 | [216] Gauthier Onclin v Radu Albot [132] | 7-6,0-6,0-6 | |
| Challenger - Ortisei | 10/23 15:25 | 25 | [310] Maks Kasnikowski v Gauthier Onclin [216] | 6-1,6-4 | |
| ATP - Antwerpen | 10/16 09:30 | 19 | [214] Gauthier Onclin v Giovanni M Perricard [226] | 4-6,2-6 | |
| ATP - Antwerpen | 10/15 11:30 | 14 | [112] Maxime Cressy v Gauthier Onclin [206] | 2-6,6-1,6-7 | |
| Challenger - Rennes | 09/13 16:30 | 26 | [195] Gauthier Onclin v Benjamin Bonzi [102] | 1-6,2-6 | |
| Challenger - Rennes | 09/11 15:00 | 25 | [195] Gauthier Onclin v Giulio Zeppieri [136] | 6-2,6-2 | |
| Challenger - Istanbul | 09/05 10:40 | 25 | [264] Altug Celikbilek v Gauthier Onclin [198] | 6-1,6-0 | |
| US Open | 08/25 18:30 | 15 | [205] Gauthier Onclin v Sho Shimabukuro [159] | 4-6,6-7 | |
| US Open | 08/23 18:05 | 14 | [205] Gauthier Onclin v Marco Trungelliti [228] | 6-3,6-4 | |
| Challenger - Meerbusch | 08/10 15:30 | 26 | [203] Gauthier Onclin v Max Hans Rehberg [413] | 6-7,6-7 | |
| Challenger - Meerbusch | 08/08 13:05 | 25 | [203] Gauthier Onclin v Gerard Campana Lee [419] | 2-6,7-5,6-1 | |
| Challenger - Lüdenscheid | 08/04 12:00 | 27 | [208] Gauthier Onclin v Benoit Paire [126] | 4-6,4-6 | |
| Challenger - Lüdenscheid | 08/03 14:00 | 26 | [208] Gauthier Onclin v Santiago Rodriguez Taverna [272] | 6-1,6-4 | |
| Challenger - Lüdenscheid | 08/01 15:40 | 25 | [148] Jan Choinski v Gauthier Onclin [208] | 4-6,2-6 | |
| Challenger - Amersfoort | 07/21 09:00 | 27 | [215] Gauthier Onclin v Rudolf Molleker [264] | 2-6,2-6 | |
| Challenger - Amersfoort | 07/19 12:40 | 26 | Guy Den Ouden v Gauthier Onclin | 6-7,6-7 | |
| Challenger - Amersfoort | 07/18 08:30 | 25 | [215] Gauthier Onclin v Oriol Roca Batalla [290] | 6-2,6-2 | |
| Challenger - Iasi | 07/11 07:30 | 25 | Pablo Cuevas v Gauthier Onclin | 6-2,6-3 | |
| Challenger - Mailand | 07/07 10:00 | 27 | [115] Facundo D Acosta v Gauthier Onclin [216] | 6-4,6-3 | |
| Challenger - Mailand | 07/05 08:30 | 26 | [216] Gauthier Onclin v Alessandro Giannessi [241] | 6-4,6-1 | |
| Challenger - Mailand | 07/03 15:30 | 25 | [230] Edoardo Lavagno v Gauthier Onclin [216] | 6-1,3-6,4-6 |
Wikipedia - Gauthier Onclin
Gauthier Onclin (* 26. Februar 2001 in Lüttich) ist ein belgischer Tennisspieler.