Stadium: Center Court A Round: 54 Ground: Hardcourt outdoor
| 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 |
| ITF M15 Jakarta | 2022/08/10 03:40 | Issei Okamura v Shintaro Imai | 0-6,1-6 |
| ITF M15 Jakarta | 2022/08/09 02:00 | Anthony Susanto v Issei Okamura | 1-6,5-7 |
| ITF M25 Sapporo | 2022/08/30 03:50 | Taiki Nagamine v Yamato Sueoka | 2-6,0-6 |