Stadium: Court F Round: 28 Ground: Hardcourt outdoor
| Challenger Seoul Qual | 2017/05/06 02:20 | Daniel Nguyen v Takuto Niki | 2-6,6-1,6-2 |
| ITF Egypt F5 | 2018/02/15 09:45 | Jelle Sels v Daniel Nguyen | 4-6,7-5,0-6 |
| ITF Egypt F5 | 2018/02/13 08:00 | Kirill Kivattsev v Daniel Nguyen | 5-7,6-7 |
| ITF Egypt F4 | 2018/02/07 08:00 | David Poljak v Daniel Nguyen | 4-6,7-6,6-3 |
| ITF Egypt F3 | 2018/01/31 14:00 | Tomas Papik v Daniel Nguyen | 6-2,7-5 |
| ITF Canada F6 | 2017/09/08 14:30 | Daniel Nguyen v Kevin King | 6-7,5-7 |
| ITF Canada F6 | 2017/09/07 14:30 | Daniel Nguyen v Liam Caruana | 6-2,7-5 |
| ITF Canada F6 | 2017/09/06 15:30 | Daniel Nguyen v Jonathan Chang | 6-4,6-4 |
| ITF Canada F6 | 2017/09/04 15:30 | Daniel Nguyen v Washi Gervais | 6-3,6-0 |
| Challenger Burnie Qual | 2018/01/27 06:00 | Takuto Niki v N. Vijay Sundar Prashanth | 4-6,3-6 |
| Challenger Burnie Qual | 2018/01/27 02:25 | Takuto Niki v Thomas Bosancic | 6-3,6-2 |
| ITF Hong Kong F6 | 2018/01/04 02:00 | Matteo Viola v Takuto Niki | 6-1,6-3 |
| ITF Hong Kong F6 | 2018/01/03 02:00 | Lingxi Zhao v Takuto Niki | 1-6,1-6 |
| ITF Hong Kong F6 | 2018/01/02 03:40 | Skyler Butts v Takuto Niki | 1-6,0-6 |
| ITF Hong Kong F5 | 2017/12/27 04:45 | Alexander Zhurbin v Takuto Niki | 6-4,7-6 |
| ITF Hong Kong F5 | 2017/12/26 03:30 | Takuto Niki v Evan King | 6-4,6-2 |
| Challenger Hua Hin Qual | 2017/11/18 05:45 | Edward Bourchier v Takuto Niki | 6-3,6-4 |