Stadium: Court 1 Round: 27 Ground: Clay
| Tunisia F16, Singles Qualifying | 2018/04/26 11:00 | Mertens, Yannick v Bothwell, Peter | 6-0,6-4 |
| Tunisia F16, Singles Qualifying | 2018/04/25 10:45 | Mertens, Yannick v Butts, Skyler | 6-1,6-2 |
| ITF USA F10 | 2018/04/11 17:10 | Mertens, Yannick v Redlicki, Michael | 3-6,3-6 |
| ITF USA F9 | 2018/04/05 15:00 | Karue Sell v Mertens, Yannick | 6-3,4-6,7-5 |
| ITF USA F9 | 2018/04/03 15:40 | Ram-Harel, Or v Mertens, Yannick | 4-6,6-3,1-6 |
| Challenger Le Gosier | 2018/03/27 20:55 | Mertens, Yannick v Bemelmans, Ruben | 5-7,1-6 |
| Challenger - Lille | 2018/03/20 18:05 | Olaso, Guillermo v Mertens, Yannick | 5-7,6-1,6-3 |
| ITF Israel F1 | 2018/03/08 08:00 | Mertens, Yannick v Gianluca Mager | 7-5,6-3 |
| Tunisia F16, Singles Qualifying | 2018/04/25 10:50 | Bayard, Damien v Meuffels, Alban | 3-6,6-4,6-4 |
| Tunisia F15, Singles Qualifying | 2018/04/21 09:00 | Bayard, Damien v Crepatte, Baptiste | 4-6,3-6 |
| Tunisia F15, Singles Qualifying | 2018/04/20 09:00 | Bayard, Damien v Finn Bass | 6-1,6-2 |
| Tunisia F15, Singles Qualifying | 2018/04/19 10:25 | Bayard, Damien v Aswat, Imran | 6-4,6-2 |
| ITF France F6 | 2018/03/23 15:15 | Bayard, Damien v Jules Marie | 2-6,4-6 |
| ITF France F6 | 2018/03/22 14:55 | Bayard, Damien v Yann Marti | 6-4,2-6,6-1 |
| ITF France F6 | 2018/03/20 12:55 | Marc-Andrea Huesler v Bayard, Damien | 3-6,3-6 |
| France F5, Singles | 2018/03/13 12:35 | Igor Sijsling v Bayard, Damien | 6-2,6-0 |