Stadium: Court 1 Round: 25 Ground: Hardcourt outdoor
| Challenger Yokohama | 2017/03/03 05:00 | Kaito Uesugi v Tatsuma Ito | 7-6,2-6,6-7 |
| Challenger Ningbo | 2017/10/18 03:00 | Yen-Hsun Lu v Tatsuma Ito | 6-2,6-3 |
| Challenger Ningbo | 2017/10/16 06:10 | Rigele Te v Tatsuma Ito | 3-6,5-7 |
| ATP Tokyo Qual | 2017/09/30 04:40 | Tatsuma Ito v Stefanos Tsitsipas | 6-4,6-7,2-6 |
| Challenger Gwangju | 2017/09/23 01:50 | Tatsuma Ito v Matthias Bachinger | 6-7,3-6 |
| Challenger Gwangju | 2017/09/22 02:00 | Steven Diez v Tatsuma Ito | 2-6,4-6 |
| Challenger Gwangju | 2017/09/20 01:30 | Bradley Klahn v Tatsuma Ito | 5-7,6-1,3-6 |
| Challenger Gwangju | 2017/09/18 01:30 | Marc Polmans v Tatsuma Ito | 1-6,1-6 |
| Challenger Shanghai | 2017/09/13 04:20 | Omar Jasika v Tatsuma Ito | 4-6,6-3,7-5 |
| ATP Tokyo Qual | 2017/09/30 03:00 | Frances Tiafoe v Kaito Uesugi | 6-2,6-4 |
| ITF Japan F5 | 2017/04/03 03:40 | Kaito Uesugi v Renta Tokuda | 4-6,0-6 |
| ITF Japan F4 | 2017/04/01 01:00 | Takuto Niki v Kaito Uesugi | 6-3,6-3 |
| ITF Japan F4 | 2017/03/31 01:00 | Tung-Lin Wu v Kaito Uesugi | 1-6,1-6 |
| ITF Japan F4 | 2017/03/30 01:00 | Kaito Uesugi v Jumpei Yamasaki | 6-2,6-2 |
| ITF Japan F4 | 2017/03/28 03:00 | Kaito Uesugi v Issei Okamura | 6-3,6-3 |
| ITF Japan F3 | 2017/03/22 04:15 | Yusuke Takahashi v Kaito Uesugi | 6-4,6-1 |
| ITF Japan F3 | 2017/03/20 02:55 | Kaito Uesugi v Yuichi Ito | 7-5,3-6,6-2 |