Stadium: Court F Round: 45 Ground: Hardcourt indoor
| ITF Japan F4 | 2018/03/24 02:00 | Soichiro Moritani v Itsuki Matsumoto | 6-2,6-3 |
| ITF Japan F1 | 2018/03/05 01:00 | Takashi Saito v Itsuki Matsumoto | 6-3,6-4 |
| ITF Japan F1 | 2018/03/04 01:00 | Shoji Sato v Itsuki Matsumoto | 4-6,4-6 |
| ITF Japan F1 | 2018/03/03 03:00 | Itsuki Matsumoto v Ryota Kishi | 6-3,6-1 |
| Challenger Kobe Qual | 2017/11/04 03:40 | Yosuke Watanuki v Itsuki Matsumoto | 6-4,6-3 |
| ITF Spain F31 | 2017/09/26 09:00 | Itsuki Matsumoto v Sergio Barranco | 3-6,4-6 |
| Davis Cup | 2018/04/04 11:50 | Colin Sinclair v Christian Didier Chin | 3-6,2-6 |
| ITF Thailand F12 | 2017/12/12 10:00 | Colin Sinclair v Daniel Altmaier | 3-6,5-7 |
| ITF Thailand F12 Qual | 2017/12/11 04:15 | Sung Jun Park v Colin Sinclair | 3-6,4-6 |
| ITF Thailand F12 Qual | 2017/12/10 03:00 | Colin Sinclair v Min Hyeok Cho | 4-6,6-4,6-4 |
| ITF Thailand F12 Qual | 2017/12/09 05:30 | Colin Sinclair v Chattarin Wareesri | 6-0,6-0 |
| ITF Thailand F11 Qual | 2017/12/03 03:00 | Daniiar Duldaev v Colin Sinclair | 7-6,6-0 |
| ITF Thailand F11 Qual | 2017/12/02 05:00 | Colin Sinclair v Yuttana Charoenphon | 6-1,6-3 |
| ITF Thailand F10 | 2017/11/29 03:00 | Alexey Vatutin v Colin Sinclair | 4-6,6-2,6-1 |