Stadium: Centre Round: 54
| Challenger Loughborough | 2018/05/22 12:30 | Frederik Nielsen v David Guez | 2-6,4-6 |
| Challenger Loughborough Qual | 2018/05/21 09:30 | Johannes Haerteis v Frederik Nielsen | 6-7,1-6 |
| Challenger Loughborough Qual | 2018/05/20 09:30 | Simon Carr v Frederik Nielsen | 3-6,4-6 |
| Challenger Loughborough Qual | 2018/05/19 09:00 | Remi Boutillier v Frederik Nielsen | 7-6,6-7,1-6 |
| Challenger Busan Qual | 2018/05/14 03:30 | Yosuke Watanuki v Frederik Nielsen | 1-6,6-4,6-0 |
| Challenger Busan Qual | 2018/05/13 04:10 | Frederik Nielsen v Wishaya Trongcharoenchaikul | 6-7,6-4,6-0 |
| Challenger Seoul Qual | 2018/04/28 04:30 | Yong-Kyu Lim v Frederik Nielsen | 6-4,6-1 |
| Davis Cup | 2018/04/07 10:00 | Frederik Nielsen v Karim-Mohamed Maamoun | 6-3,3-6,6-7 |
| ITF France F5 | 2018/03/15 10:30 | Maxence Beauge v Albano Olivetti | 6-4,7-5 |
| ITF France F5 | 2018/03/13 14:30 | Remi Boutillier v Albano Olivetti | 4-6,6-7 |
| ITF France F4 | 2018/03/08 14:10 | Botic Van De Zandschulp v Albano Olivetti | 6-4,6-7,7-6 |
| ITF France F4 | 2018/03/07 11:00 | Hugo Gaston v Albano Olivetti | 3-6,7-6,4-6 |
| ITF Switzerland F2 | 2018/02/16 13:00 | Niels Desein v Albano Olivetti | 6-4,6-4 |
| ITF Switzerland F2 | 2018/02/15 11:00 | Albano Olivetti v Lukas Klein | 6-7,7-6,7-5 |
| ITF Switzerland F2 Qual | 2018/02/14 09:00 | Albano Olivetti v Antal Van Der Duim | 7-6,6-2 |
| ITF Switzerland F2 | 2018/02/13 14:25 | Albano Olivetti v Luca Castelnuovo | 6-3,7-6 |