Round: 25 Ground: Hardcourt outdoor
| ITF Japan F5 | 2014/06/05 01:00 | Niki, Takuto v Hung, Jui-Chen | 6-2,6-4 |
| Coupe Davis | 2015/09/20 11:20 | Qureshi, Aisam v Hung, Jui-Chen | 7-6,4-6,6-4,6-3 |
| Coupe Davis | 2015/09/18 07:00 | Khan, Aqeel v Hung, Jui-Chen | 5-7,6-4,6-1,6-4 |
| ITF China F13 | 2015/08/13 02:00 | Hung, Jui-Chen v Shiga, Masato | 7-6,6-7,1-6 |
| ITF China F12 | 2015/08/03 10:20 | Wang, Aoxiong v Hung, Jui-Chen | 6-3,6-3 |
| ITF China F11 | 2015/07/21 03:40 | Zhe Li v Hung, Jui-Chen | 6-0,6-2 |
| Coupe Davis | 2015/07/17 03:00 | Hung, Jui-Chen v Patrombon, Jeson | 6-2,6-2,6-1 |
| ITF China F9 | 2015/07/03 02:00 | Hung, Jui-Chen v Wu, Di | 6-7,2-6 |
| ITF China F9 | 2015/07/02 02:00 | Hung, Jui-Chen v Wang, Aoxiong | 6-2,6-3 |
| Challenger Aptos | 2015/08/11 17:00 | Kyle Edmund v Niki, Takuto | 6-1,6-2 |
| Aptos, USA, Qualifications | 2015/08/10 19:40 | Tennys Sandgren v Niki, Takuto | 6-3,7-5 |
| ATP Washington Qual | 2015/08/01 15:50 | Bangoura, Sekou v Niki, Takuto | 3-6,7-6,6-7 |
| ITF Japan F8 | 2015/06/25 01:00 | Renta Tokuda v Niki, Takuto | 2-6,7-6,6-3 |
| ITF Japan F8 | 2015/06/24 03:45 | Jun, Woong-Sun v Niki, Takuto | 2-6,6-2,4-6 |
| ITF Japan F6 | 2015/06/13 01:30 | Niki, Takuto v Toshihide Matsui | 3-6,2-6 |
| ITF Japan F6 | 2015/06/12 05:30 | Niki, Takuto v Sasai, Masaki | 6-2,6-1 |
| ITF Japan F6 | 2015/06/11 02:55 | Niki, Takuto v Watanuki, Keisuke | 6-7,7-6,6-4 |