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