Round: 26 Ground: Hardcourt outdoor
| Challenger Kaohsiung | 2015/09/22 08:10 | Jui-Chen Hung v Takuto Niki | 2-6,2-6 |
| Challenger Aptos | 2015/08/11 17:00 | Kyle Edmund v Takuto Niki | 6-1,6-2 |
| Challenger Aptos - Qual. | 2015/08/10 19:40 | Tennys Sandgren v Takuto Niki | 6-3,7-5 |
| ATP Washington - Qual. | 2015/08/01 15:50 | Sekou Bangoura v Takuto Niki | 3-6,7-6,6-7 |
| ITF Giappone F8 | 2015/06/25 01:00 | Renta Tokuda v Takuto Niki | 2-6,7-6,6-3 |
| ITF Giappone F8 | 2015/06/24 03:45 | Woong-Sun Jun v Takuto Niki | 2-6,6-2,4-6 |
| ITF Giappone F6 | 2015/06/13 01:30 | Takuto Niki v Toshihide Matsui | 3-6,2-6 |
| ITF Giappone F6 | 2015/06/12 05:30 | Takuto Niki v Masaki Sasai | 6-2,6-1 |
| Challenger Kaohsiung | 2015/09/21 10:10 | Liang-Chi Huang v Hyeon Chung | 0-6,1-6 |
| US Open | 2015/09/03 16:15 | Stan Wawrinka v Hyeon Chung | 7-6,7-6,7-6 |
| US Open | 2015/09/01 21:15 | Hyeon Chung v James Duckworth | 6-3,6-1,6-2 |
| ATP Cincinnati Qual | 2015/08/16 18:30 | Vasek Pospisil v Hyeon Chung | 6-7,6-0,6-3 |
| ATP Cincinnati Qual | 2015/08/15 21:20 | Ivan Dodig v Hyeon Chung | 6-3,4-6,1-6 |
| ATP Montreal | 2015/08/10 19:40 | Hyeon Chung v Leonardo Mayer | 3-6,4-6 |
| ATP Montreal - Qual. | 2015/08/08 17:50 | Hyeon Chung v Kelsey Stevenson | 6-2,6-1 |
| ATP Washington | 2015/08/05 04:35 | Hyeon Chung v Marin Cilic | 6-7,3-6 |