Stadium: Centre Court Round: 45
| ITF Spain F17 | 2016/06/19 09:30 | Remi Boutillier v Frederik Nielsen | 4-6,3-6 |
| ITF Nigeria F3 | 2018/05/02 09:00 | Youssef Hossam v Remi Boutillier | 6-3,7-6 |
| ITF Nigeria F3 | 2018/04/30 10:35 | Remi Boutillier v Diego F Flores | 6-1,6-3 |
| ITF Nigeria F2 | 2018/04/25 09:00 | Suraj R Prabodh v Remi Boutillier | 6-4,2-6,7-6 |
| ITF Nigeria F2 | 2018/04/23 09:00 | Remi Boutillier v Kento Takeuchi | 6-3,6-1 |
| ITF Nigeria F1 | 2018/04/18 12:00 | Remi Boutillier v Tukhula Jacobs | 3-6,2-6 |
| ITF Nigeria F1 | 2018/04/17 09:00 | Emmanuel Audu v Remi Boutillier | 3-6,0-6 |
| Challenger St Brieuc Qual | 2018/03/25 13:40 | Remi Boutillier v Tristan Lamasine | 6-3,6-7,2-6 |
| Challenger St Brieuc Qual | 2018/03/24 10:20 | Bradley Mousley v Remi Boutillier | 6-4,6-7,2-6 |
| 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 |
| Challenger Drummondville Qual | 2018/03/12 22:55 | Frederik Nielsen v Aleksandar Vukic | 2-6,4-6 |
| Challenger Drummondville Qual | 2018/03/11 17:15 | Frederik Nielsen v Pavel Krainik | View |
| ITF Canada F2 | 2018/03/06 15:00 | Frederik Nielsen v Jared Hiltzik | 4-6,6-4,2-6 |
| ITF Canada F2 Qual | 2018/03/05 14:30 | Frederik Nielsen v Ricardo Rodriguez-Pace | 3-6,6-3,6-4 |