Round: 27 Ground: Hardcourt outdoor
| ITF Japan F1 | 2016/03/10 05:35 | Singh, Karunuday v Kato, Shoma | 6-0,6-1 |
| ITF Japan F1 | 2016/03/10 01:00 | Singh, Karunuday v Hashimoto, Taiki | 6-2,6-4 |
| ITF Thailand F9 | 2015/06/25 03:00 | Sekiguchi, Shuichi v Singh, Karunuday | 6-0,6-2 |
| ITF Thailand F9 | 2015/06/24 03:45 | Kazuma Kawachi v Singh, Karunuday | 3-6,4-6 |
| ITF Thailand F9 | 2015/06/15 04:10 | Singh, Karunuday v Na, Jung-Woong | 2-6,3-6 |
| ITF India F6 | 2015/05/28 04:00 | Hung, Jui-Chen v Singh, Karunuday | 1-6,3-6 |
| ITF India F6 | 2015/05/27 05:45 | Bendre, Anvit v Singh, Karunuday | 1-6,3-6 |
| ITF India F5 | 2015/05/22 04:30 | Singh, Karunuday v Bisht, Ronit Singh | 6-7,6-2,7-6 |
| ITF Japan F1 | 2016/03/10 06:35 | Sidharth Rawat v Issei Okamura | 2-6,4-6 |
| ITF Japan F1 | 2016/03/08 01:00 | Issei Okamura v Takeuchi, Kento (1987) | 7-6,7-6 |
| Turkey F6, Singles Qualifying | 2016/02/12 09:00 | Issei Okamura v Hong, Seong Chan | 7-5,4-6,3-6 |
| Turkey F6, Singles Qualifying | 2016/02/11 13:45 | Nema, Patrik v Issei Okamura | 1-6,5-7 |
| Turkey F6, Singles Qualifying | 2016/02/09 09:35 | Pauwels, Maxime v Issei Okamura | 6-3,3-6,3-6 |
| ITF Turkey F5 | 2016/02/04 08:00 | Issei Okamura v Hampel, Lenny | 6-1,0-6,6-7 |
| ITF Turkey F5 | 2016/02/02 09:30 | Issei Okamura v Zincirli, Mert | 6-4,6-2 |
| ITF Turkey F4 | 2016/01/25 09:30 | Issei Okamura v Kishi, Ryota | 2-6,6-2,1-6 |