Stadium: Court 2 Round: 26 Ground: Hardcourt outdoor
| Chengdu, China | 2018/07/31 04:40 | Tatsuma Ito v Petrovic, Danilo | 7-6,7-6 |
| Gatineau, Canada | 2018/07/17 14:00 | Tatsuma Ito v Neuchrist, Maximilian | 7-6,3-6,5-7 |
| Challenger Winnipeg | 2018/07/10 16:30 | Tatsuma Ito v Marc-Andrea Huesler | 6-7,2-6 |
| Wimbledon Qual | 2018/06/25 11:25 | Dominik Koepfer v Tatsuma Ito | 6-4,6-3 |
| Ilkley, Great Britain | 2018/06/21 11:35 | Polansky, Peter v Tatsuma Ito | 6-2,6-4 |
| Ilkley, Great Britain | 2018/06/19 14:00 | Tatsuma Ito v Klahn, Bradley | 6-4,6-7,6-3 |
| Challenger - Nottingham | 2018/06/13 10:00 | Tatsuma Ito v Schnur, Brayden | 3-6,6-3,6-7 |
| Challenger - Nottingham | 2018/06/12 11:00 | Cameron Norrie v Tatsuma Ito | 6-1,5-7,3-6 |
| Chengdu, China | 2018/07/31 03:00 | Arjun Kadhe v Niesten, Miliaan | 2-6,4-6 |
| Challenger Chengdu Qual | 2018/07/29 03:00 | Tung-Lin Wu v Niesten, Miliaan | 7-6,5-7,1-6 |
| Challenger Chengdu Qual | 2018/07/28 06:00 | Niesten, Miliaan v Wishaya Trongcharoenchaikul | 6-3,6-0 |
| Challenger Chengdu Qual | 2018/07/28 02:00 | Niesten, Miliaan v Jumpei Yamasaki | 6-2,6-2 |
| Challenger Scheveningen Qual | 2018/07/14 14:05 | Niesten, Miliaan v Antoine Bellier | 6-1,3-6,3-6 |
| ITF Germany F4 | 2018/06/20 10:50 | Nerman Fatic v Niesten, Miliaan | 6-0,6-7,7-5 |
| s-Hertogenbosch, Netherlands, Qualifying | 2018/06/10 10:50 | Niesten, Miliaan v Alex Bolt | 3-6,3-6 |
| s-Hertogenbosch, Netherlands, Qualifying | 2018/06/09 10:15 | Young, Donald v Niesten, Miliaan | 4-6,2-6 |