Stadium: Court 2 Round: 44 Ground: Hardcourt outdoor
| ITF M25 Albury | 2019/02/27 23:30 | Issei Okamura v Alexander Crnokrak | 3-6,2-6 |
| ITF M15 Chiang Rai | 2022/04/05 05:45 | Orel Kimhi v Issei Okamura | 6-7,7-6,6-2 |
| ITF M25 Canberra | 2022/03/31 02:45 | Dayne Kelly v Issei Okamura | 6-0,6-1 |
| ITF M25 Canberra | 2022/03/29 00:40 | Kento Takeuchi v Issei Okamura | 3-6,6-4,4-6 |
| ITF M25 Canberra | 2022/03/22 03:05 | Kento Takeuchi v Issei Okamura | 5-7,6-2,6-2 |
| ITF M15 Telavi | 2021/08/03 07:45 | Issei Okamura v Aleksandre Bakshi | 6-7,3-6 |
| ITF M25 Telavi | 2021/07/27 09:05 | Zura Tkemaladze v Issei Okamura | 7-6,6-3 |
| ITF M25 Tulsa | 2021/06/14 18:00 | Axel Nefve v Issei Okamura | 6-3,6-2 |
| ITF M25 Santo Domingo | 2021/06/07 18:00 | Issei Okamura v Gabriel Evans | 2-6,6-4,8-10 |
| ITF M25 Canberra | 2022/03/29 00:35 | Alexander Crnokrak v James McCabe | 2-6,6-7 |
| ITF M25 Canberra | 2022/03/22 04:55 | Tristan Schoolkate v Alexander Crnokrak | 6-4,6-2 |
| ITF M25 Bendigo | 2022/03/08 00:45 | Renta Tokuda v Alexander Crnokrak | 6-4,6-2 |
| ITF M25 Bendigo | 2022/03/03 01:25 | Alexander Crnokrak v Andrew Harris | 3-6,1-6 |
| UTR Pro Tennis Series Carrara | 2021/11/07 00:00 | Akira Santillan v Alexander Crnokrak | 6-1,3-6,6-2 |
| UTR Pro Tennis Series Carrara | 2021/11/06 00:30 | Alexander Crnokrak v Jeremy Jin | 6-4,5-4 |
| UTR Pro Tennis Series Carrara | 2021/11/04 23:00 | Alexander Crnokrak v Sam Oster | 6-1,5-4 |
| UTR Pro Tennis Series Carrara | 2021/11/02 23:00 | Alexander Crnokrak v Will Maher | 6-2,5-1 |