Stadium: Court 2 Round: 25
| ITF Japan F6 | 2018/04/10 02:25 | Hiroki Moriya v Soichiro Moritani | 6-4,7-5 |
| ITF Japan F5 | 2018/04/02 02:20 | Jumpei Yamasaki v Soichiro Moritani | 6-1,6-3 |
| ITF Japan F4 | 2018/03/26 01:00 | Soichiro Moritani v Shinta Fujii | 6-4,3-6,3-6 |
| ITF Japan F4 | 2018/03/25 01:00 | Soichiro Moritani v Masaki Sasai | 6-4,6-3 |
| ITF Japan F4 | 2018/03/24 02:00 | Soichiro Moritani v Itsuki Matsumoto | 6-2,6-3 |
| ITF Japan F3 | 2018/03/19 01:00 | Sho Katayama v Soichiro Moritani | 6-2,6-0 |
| ITF Japan F3 | 2018/03/18 01:00 | Soichiro Moritani v Takashi Saito | 6-3,3-6,0-6 |
| ITF Japan F3 | 2018/03/17 04:00 | Soichiro Moritani v Kazuki Shimizu | 6-2,6-3 |
| ITF Vietnam F1 | 2018/04/29 05:30 | Jirat Navasirisomboon v Daisuke Sumizawa | 6-2,6-1 |
| Cupa Davis | 2018/04/07 02:00 | Jeson Patrombon v Jirat Navasirisomboon | 6-2,6-2 |
| Cupa Davis | 2018/02/04 07:45 | Yasitha De Silva v Jirat Navasirisomboon | 5-7,2-6 |
| Cupa Davis | 2018/02/03 04:00 | Sharmal Dissanayake v Jirat Navasirisomboon | 6-4,7-5 |
| ITF Thailand F12 Qual | 2017/12/09 06:30 | Jirat Navasirisomboon v Tihomir Grozdanov | 3-6,5-7 |
| ITF Thailand F11 Qual | 2017/12/03 03:00 | Florian Fallert v Jirat Navasirisomboon | 6-4,6-3 |
| ITF Thailand F11 Qual | 2017/12/02 06:00 | Richard Yang v Jirat Navasirisomboon | 6-4,6-7,2-6 |
| ITF Thailand F10 | 2017/11/28 06:00 | Alexey Vatutin v Jirat Navasirisomboon | 6-1,6-3 |