Round: 25 Ground: Clay
| ITF Japan F4 | 2015/04/01 03:20 | Ito, Yuichi v Niki, Takuto | 1-6,4-6 |
| ITF Japan F1 | 2015/03/14 02:00 | Niki, Takuto v Ito, Yuichi | 7-6,6-3 |
| ITF Japan F4 | 2017/03/30 03:00 | Ito, Yuichi v Yusuke Takahashi | 3-6,3-6 |
| ITF Japan F4 | 2017/03/29 05:30 | Oh, Chan-Yeong v Ito, Yuichi | 4-6,1-6 |
| ITF Japan F3 | 2017/03/20 02:55 | Kaito Uesugi v Ito, Yuichi | 7-5,3-6,6-2 |
| ITF Japan F2 | 2017/03/14 02:30 | Huang, Liang-Chi v Ito, Yuichi | 6-2,7-5 |
| ITF Japan F1 | 2017/03/09 02:25 | Ito, Yuichi v Katayama, Sho | 0-6,0-6 |
| ITF Japan F1 | 2017/03/07 02:30 | Shirafuji, Naru v Ito, Yuichi | 2-6,6-2,3-6 |
| Challenger Kyoto Qual | 2017/02/18 04:55 | Alex Bolt v Ito, Yuichi | 6-2,6-0 |
| ITF Turkey F5 | 2017/02/08 08:00 | Ito, Yuichi v Bothwell, Peter | 3-6,4-6 |
| ITF Japan F4 | 2017/04/02 02:00 | Niki, Takuto v Yusuke Takahashi | 2-6,2-6 |
| ITF Japan F4 | 2017/04/01 01:00 | Niki, Takuto v Kaito Uesugi | 6-3,6-3 |
| ITF Japan F4 | 2017/03/31 02:40 | Niki, Takuto v Renta Tokuda | 6-2,6-7,7-5 |
| ITF Japan F4 | 2017/03/30 03:15 | Niki, Takuto v Sho Shimabukuro | 6-7,6-3,7-6 |
| ITF Japan F4 | 2017/03/29 03:40 | Niki, Takuto v Takeshima, Shunrou | 6-2,7-5 |
| ITF Japan F3 | 2017/03/24 03:10 | Niki, Takuto v Nam Hoang Ly | 4-6,6-4,6-0 |
| ITF Japan F3 | 2017/03/23 01:30 | Wishaya Trongcharoenchaikul v Niki, Takuto | 7-6,1-6,4-6 |
| ITF Japan F3 | 2017/03/22 07:00 | Chung, Hong v Niki, Takuto | 3-6,5-7 |