Stadium: Center Court Round: 28 Ground: Hardcourt outdoor
| Challenger Kobe | 2017/11/07 04:25 | Duckhee Lee v Tatsuma Ito | 2-6,1-6 |
| 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 Mouilleron Le Captif Qual | 2017/11/06 10:00 | Ilya Ivashka v Romain Barbosa | 6-7,6-4,6-0 |
| Challenger Mouilleron Le Captif Qual | 2017/11/05 09:30 | Ilya Ivashka v Maxime Tabatruong | 6-1,7-6 |
| US Open Qual | 2017/08/23 20:50 | Facundo Bagnis v Ilya Ivashka | 6-2,6-0 |
| Challenger Portoroz | 2017/08/10 14:00 | Ilya Ivashka v Matteo Berrettini | 4-6,4-6 |
| Challenger Portoroz | 2017/08/09 13:00 | Jaime Fermosell v Ilya Ivashka | 3-6,2-6 |
| Challenger Portoroz | 2017/08/07 14:30 | Dmitry Popko v Ilya Ivashka | 3-6,3-6 |
| Challenger Segovia | 2017/08/01 11:10 | Cem Ilkel v Ilya Ivashka | 7-6,7-6 |
| Wimbledon Qual | 2017/06/26 16:50 | Ilya Ivashka v Grega Zemlja | 6-7,6-3,4-6 |