Stadium: Court Central Round: 54 Ground: Hardcourt outdoor
| ITF France F6 | 2014/03/12 18:10 | David Guez v Tristan Lamasine | 6-1,5-7,6-2 |
| Challenger Quimper - Kwalifikacje | 2018/01/28 13:45 | David Guez v Maxime Tabatruong | 6-3,7-5 |
| ITF France F2 | 2018/01/18 17:10 | David Guez v Matteo Martineau | 4-6,1-6 |
| ITF France F2 | 2018/01/17 10:30 | David Guez v Romain Bauvy | 6-1,6-2 |
| Challenger Mouilleron Le Captif Qual | 2017/11/05 12:55 | David Guez v Evan Furness | 3-6,4-6 |
| Challenger Brest | 2017/10/24 13:20 | Gleb Sakharov v David Guez | 6-2,6-4 |
| ITF France F24 | 2017/10/18 14:10 | David Guez v Maximilian Neuchrist | 6-4,6-4 |
| ITF France F24 | 2017/10/17 09:45 | David Guez v Evan Furness | 6-4,6-3 |
| ITF France F23 Qual | 2017/10/15 13:00 | David Guez v Maxime Authom | 6-7,6-4,3-6 |
| Challenger Quimper - Kwalifikacje | 2018/01/28 12:25 | Petros Tsitsipas v Tristan Lamasine | 3-6,1-6 |
| Challenger Rennes | 2018/01/23 17:55 | Quentin Halys v Tristan Lamasine | 6-1,7-6 |
| Challenger Rennes Qual | 2018/01/21 15:45 | Quentin Gueydan v Tristan Lamasine | 6-4,1-6,4-6 |
| Challenger Rennes Qual | 2018/01/21 11:15 | Tristan Lamasine v Nicola Kuhn | 2-6,7-5,6-2 |
| Challenger Rennes Qual | 2018/01/20 12:00 | Evan Furness v Tristan Lamasine | 6-7,2-6 |
| Challenger Koblenz Qual | 2018/01/14 15:15 | Clement Geens v Tristan Lamasine | 2-6,6-2,6-4 |
| Challenger Brest | 2017/10/25 10:35 | Corentin Moutet v Tristan Lamasine | 6-4,6-7,6-3 |
| Challenger Brest | 2017/10/24 09:00 | Illya Marchenko v Tristan Lamasine | 5-7,3-6 |