Stadium: Court 2 Round: 25 Ground: Hardcourt indoor
| ITF Great Britain F2 | 2018/02/09 10:00 | Nielsen, Frederik v Neuchrist, Maximilian | 2-6,3-6 |
| ITF Great Britain F2 | 2018/02/08 11:30 | Pauffley, Neil v Nielsen, Frederik | 4-6,5-7 |
| ITF Great Britain F2 | 2018/02/07 10:00 | Nielsen, Frederik v Hu, Nicholas S | 3-6,6-4,7-6 |
| Coupe Davis | 2018/02/04 11:40 | Nielsen, Frederik v Bothwell, Peter | 6-1,6-1 |
| Coupe Davis | 2018/02/03 11:00 | Nielsen, Frederik v Carr, Simon | 6-3,7-6 |
| Bangkok, Thaïlande | 2018/01/10 06:30 | Nielsen, Frederik v Evgeny Karlovskiy | 4-6,2-6 |
| Bangkok, Thaïlande | 2018/01/09 04:25 | Yang, Tsung-Hua v Nielsen, Frederik | 4-6,3-6 |
| Bangkok, Thailand, Qualifying | 2018/01/08 05:35 | Nielsen, Frederik v Ollert, Lukas | 5-7,7-5,6-4 |
| Challenger Budapest Qual | 2018/02/04 12:40 | Cacic, Nikola v Jankovits, Yannick | 6-4,6-1 |
| Challenger Budapest Qual | 2018/02/03 18:25 | Petr Nouza v Jankovits, Yannick | 5-7,7-6,5-7 |
| ITF Egypt F2 | 2018/01/24 08:00 | Jankovits, Yannick v Mate Valkusz | 2-6,2-6 |
| ITF Egypt F1 | 2018/01/17 08:00 | Jankovits, Yannick v Salman, Omar | 6-4,2-6,3-6 |
| ITF Greece F10 | 2017/11/26 08:00 | Jankovits, Yannick v Shyla, Yaraslau | 6-1,7-5 |
| ITF Greece F10 | 2017/11/25 09:00 | Veldheer, Mick v Jankovits, Yannick | 2-6,1-6 |
| ITF Greece F10 | 2017/11/24 11:15 | Jankovits, Yannick v Sude, Jakob | 6-3,6-3 |
| ITF Greece F10 | 2017/11/23 09:00 | Jankovits, Yannick v Jelle Sels | 6-0,6-4 |