Stadium: Court 4 Round: 45 Ground: Hardcourt outdoor
| Challenger Kyoto | 2018/02/20 01:30 | Yusuke Takahashi v Blake Ellis | 7-6,4-6,4-6 |
| Challenger Burnie | 2018/02/01 02:40 | Yusuke Takahashi v Daniel Altmaier | 6-7,3-6 |
| Challenger Burnie | 2018/01/31 00:45 | Kevin King v Yusuke Takahashi | 4-6,6-2,2-6 |
| Challenger Burnie | 2018/01/29 23:00 | Alexander Sarkissian v Yusuke Takahashi | 7-5,6-7,0-6 |
| Challenger Bangkok | 2018/01/12 05:00 | Marcel Granollers v Yusuke Takahashi | 6-4,6-1 |
| Challenger Bangkok | 2018/01/11 03:00 | Emil Ruusuvuori v Yusuke Takahashi | 6-3,3-6,3-6 |
| Challenger Bangkok | 2018/01/09 07:40 | Mukund Sasikumar v Yusuke Takahashi | 2-6,7-5,0-6 |
| Challenger Bangkok | 2018/01/02 06:30 | Yusuke Takahashi v Aleksandr Nedovyesov | 4-6,4-6 |
| Challenger Brescia Qual | 2017/11/11 12:45 | Tristan-Samuel Weissborn v Giovanni Fonio | 6-7,0-6 |
| Challenger Bratislava Qual | 2017/11/04 15:15 | Tom Farquharson v Tristan-Samuel Weissborn | 6-3,6-0 |
| Challenger Anning Qual | 2017/04/23 03:20 | Soonwoo Kwon v Tristan-Samuel Weissborn | 6-7,2-6 |
| Challenger Anning Qual | 2017/04/22 06:10 | Tristan-Samuel Weissborn v Zhu Guo | 6-0,6-2 |
| Challenger Bratislava Qual | 2016/11/05 10:50 | Sebastian Ofner v Tristan-Samuel Weissborn | 6-2,7-5 |
| Challenger Eckental Qual | 2016/10/30 10:35 | Tristan-Samuel Weissborn v Sebastian Ofner | 1-6,7-5,2-6 |
| Challenger Eckental Qual | 2016/10/29 12:55 | Tristan-Samuel Weissborn v Andrei Vasilevski | 7-6,6-4 |
| Challenger Mons Qual | 2016/10/01 11:55 | Zizou Bergs v Tristan-Samuel Weissborn | 6-4,7-5 |