Stadium: Tcsb 4 Round: 54 Ground: Hardcourt indoor
| Challenger Quimper Qual | 2018/01/29 11:30 | Guez, David v Tristan Lamasine | 7-6,6-1 |
| ITF France F6 | 2014/03/12 18:10 | Guez, David v Tristan Lamasine | 6-1,5-7,6-2 |
| Challenger St Brieuc Qual | 2018/03/25 13:40 | Boutillier, Remi v Tristan Lamasine | 6-3,6-7,2-6 |
| Challenger St Brieuc Qual | 2018/03/24 10:20 | Margaroli, Luca v Tristan Lamasine | 2-6,4-6 |
| France F5, Singles | 2018/03/17 13:30 | Antoine Hoang v Tristan Lamasine | 6-3,6-4 |
| France F5, Singles | 2018/03/14 10:00 | Tristan Lamasine v Mora, Maxime | 6-3,6-4 |
| France F4, Singles | 2018/03/06 11:15 | Tristan Lamasine v Rochette, Laurent | 6-4,3-6,2-6 |
| Challenger Bergamo Qual | 2018/02/17 08:30 | Adrian Bodmer v Tristan Lamasine | 7-6,6-3 |
| Montpellier, France, Qualifying | 2018/02/04 16:25 | Norbert Gombos v Tristan Lamasine | 6-4,7-6 |
| Challenger - Quimper | 2018/02/02 15:30 | Tristan Lamasine v Alexey Vatutin | 2-6,2-6 |
| Challenger St Brieuc Qual | 2018/03/25 12:50 | Matteo Martineau v Guez, David | 3-6,6-2,3-6 |
| Challenger St Brieuc Qual | 2018/03/24 18:40 | Tchoutakian, Maxime v Guez, David | 5-7,3-6 |
| Challenger - Lille | 2018/03/23 13:10 | Maden, Yannick v Guez, David | 6-1,7-6 |
| Challenger - Lille | 2018/03/22 15:10 | Guez, David v Bachinger, Matthias | 6-2,6-2 |
| Challenger - Lille | 2018/03/21 09:30 | Guez, David v Goncalo Oliveira | 6-1,3-6,6-3 |
| Challenger Lille Qual | 2018/03/19 09:30 | Guez, David v Doumbia, Sadio | 6-3,6-3 |
| Challenger Lille Qual | 2018/03/18 10:00 | Guez, David v Cacic, Nikola | 6-1,6-7,6-3 |
| Challenger Lille Qual | 2018/03/17 10:45 | Guez, David v Gueydan, Quentin | 6-1,6-4 |