stadio: Court 3 Round: 166 Ground: Hardcourt outdoor
| Challenger Noumea | 2018/12/31 04:05 | Daniel Masur v Frederik Nielsen | 6-1,5-7,6-4 |
| Challenger Fairfield | 2018/10/08 17:00 | Kevin King v Frederik Nielsen | 6-4,6-3 |
| Challenger Fairfield | 2018/10/07 18:15 | Thai-Son Kwiatkowski v Frederik Nielsen | 7-6,3-6,5-7 |
| Challenger Fairfield | 2018/10/06 22:15 | Frederik Nielsen v Roberto Ortega-Olmedo | 6-2,6-2 |
| Challenger Stockton | 2018/09/29 23:05 | Alexander Ritschard v Frederik Nielsen | 6-4,7-6 |
| Challenger Tiburon | 2018/09/22 18:15 | Frederik Nielsen v Alexander Sarkissian | 4-6,5-7 |
| Challenger Cary | 2018/09/08 18:20 | Frederik Nielsen v Evan Song | 2-6,6-7 |
| Challenger Chicago | 2018/09/02 22:00 | Kaichi Uchida v Frederik Nielsen | 6-3,6-4 |
| Challenger Canberra | 2019/01/06 23:00 | Fabrice Martin v Chun Hsin Tseng | 3-6,6-7 |
| Challenger Canberra | 2019/01/05 23:00 | Fabrice Martin v Milan Radojkovic | 6-1,6-4 |
| Challenger Mouilleron le Captif | 2018/11/05 13:40 | Fabrice Martin v Alexandre Muller | 4-6,4-6 |
| Challenger Mouilleron le Captif | 2018/11/04 13:10 | Fabrice Martin v Dan Added | 6-2,6-4 |
| Challenger Mouilleron le Captif | 2018/11/03 16:00 | Oscar Otte v Fabrice Martin | 6-7,6-7 |
| Challenger Vancouver | 2018/08/11 19:40 | Mikael Torpegaard v Fabrice Martin | 6-4,3-6,6-3 |
| Challenger Bordeaux - Qual. | 2018/05/12 13:40 | Fabrice Martin v Hugo Pontico | 6-4,4-6,3-6 |
| ATP Sydney - Qual. | 2018/01/06 01:30 | Fabrice Martin v Vaclav Safranek | 1-6,2-6 |