Stadium: Court 9 Round: 25 Ground: Clay
| Canberra, Singles M-ITF-AUS-06A | 2022/03/22 03:05 | Takeuchi, Kento (1987) v Issei Okamura | 5-7,6-2,6-2 |
| ITF China F14 | 2017/07/24 08:15 | Issei Okamura v Takeuchi, Kento (1987) | 6-2,6-2 |
| ITF Japan F6 | 2017/05/30 03:55 | Takeuchi, Kento (1987) v Issei Okamura | 7-6,6-3 |
| ITF Japan F7 | 2016/06/06 02:50 | Issei Okamura v Takeuchi, Kento (1987) | 2-6,3-6 |
| ITF Japan F1 | 2016/03/08 01:00 | Issei Okamura v Takeuchi, Kento (1987) | 7-6,7-6 |
| Canberra, Singles M-ITF-AUS-06A | 2022/03/24 04:35 | Jason Kubler v Takeuchi, Kento (1987) | 6-1,6-1 |
| Canberra, Singles M-ITF-AUS-06A | 2022/03/22 03:05 | Takeuchi, Kento (1987) v Issei Okamura | 5-7,6-2,6-2 |
| Bendigo, Singles M-ITF-AUS-04A | 2022/03/10 00:55 | Takeuchi, Kento (1987) v Tristan Schoolkate | 3-6,4-6 |
| Bendigo, Singles M-ITF-AUS-04A | 2022/03/09 05:15 | Takeuchi, Kento (1987) v Jayden Court | 6-3,7-6 |
| Bendigo, Singles M-ITF-AUS-04A | 2022/03/02 04:55 | Yusuke Takahashi v Takeuchi, Kento (1987) | 7-6,6-3 |
| ITF - M15 Monastir | 2021/09/29 08:00 | Skander Mansouri v Takeuchi, Kento (1987) | 6-7,6-2,6-4 |
| ITF - M15 Monastir | 2021/09/23 08:00 | Takeuchi, Kento (1987) v Christoph Negritu | 4-6,1-6 |
| ITF - M15 Monastir | 2021/09/21 09:00 | Takeuchi, Kento (1987) v Pierre Delage | 6-0,6-2 |
| Canberra, Singles M-ITF-AUS-06A | 2022/03/22 03:05 | Takeuchi, Kento (1987) 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 |
| Tulsa, Singles Main, M-ITF-USA-16A | 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 Santo Domingo | 2021/06/02 13:25 | Olivares, Jose v Issei Okamura | 6-3,6-2 |
| ITF - M25 Santo Domingo | 2021/06/01 13:00 | Issei Okamura v Jachuck, Ronan | 3-6,7-5,10-7 |
| ITF - M15 Sharm El Sheikh | 2021/04/08 07:30 | Nicolas Moreno De Alboran v Issei Okamura | 7-5,6-1 |