Stadium: Court 5 Round: 62 Ground: Hardcourt outdoor
| ITF M25 Sapporo | 2022/09/07 05:15 | Tatsuma Ito v Issei Okamura | 6-1,6-2 |
| ITF M25 Sapporo | 2022/09/05 04:00 | Issei Okamura v Taiki Nagamine | 6-1,6-3 |
| ITF M15 Daegu | 2022/08/31 08:10 | Duckhee Lee v Issei Okamura | 5-7,6-1,6-3 |
| ITF M15 Changwon | 2022/08/26 00:55 | Ajeet Rai v Issei Okamura | 6-1,6-7,6-3 |
| ITF M15 Changwon | 2022/08/25 03:05 | Issei Okamura v Duckhee Lee | 6-2,3-6,7-5 |
| ITF M15 Changwon | 2022/08/23 01:00 | Issei Okamura v Min Seong Kim | 6-4,6-0 |
| ITF M15 Jakarta | 2022/08/15 04:45 | Issei Okamura v Amor Jasika | 3-6,4-6 |
| ITF M15 Jakarta Qual | 2022/08/14 03:55 | Issei Okamura v Roy Hobbs | 6-4,6-4 |