Stadium: Court 3 Round: 25 Ground: Hardcourt outdoor
| Challenger Gimcheon | 2018/05/09 03:50 | Yusuke Takahashi v Go Soeda | 6-7,2-6 |
| Challenger Zhangjiagang | 2017/09/08 05:00 | Yusuke Takahashi v Go Soeda | 2-6,0-6 |
| Challenger Winnipeg | 2018/07/10 15:00 | Yusuke Takahashi v Jason Kubler | 2-6,2-6 |
| Challenger Fergana | 2018/06/18 09:05 | Yusuke Takahashi v Duckhee Lee | 6-7,1-6 |
| Challenger Almaty | 2018/06/13 05:00 | Yusuke Takahashi v Roberto Cid Subervi | 1-6,0-6 |
| Challenger Almaty Qual | 2018/06/11 04:00 | Yusuke Takahashi v Gerard Granollers-Pujol | 5-7,0-6 |
| Challenger Almaty Qual | 2018/06/10 06:35 | Yusuke Takahashi v Pavel Kotov | 7-5,3-6,6-3 |
| Challenger Almaty Qual | 2018/06/09 07:20 | Yusuke Takahashi v Sidharth Rawat | 7-6,6-2 |
| Challenger Busan | 2018/05/14 07:45 | Yusuke Takahashi v Duckhee Lee | 2-6,1-6 |
| Challenger Gimcheon | 2018/05/09 03:50 | Yusuke Takahashi v Go Soeda | 6-7,2-6 |
| Challenger Winnipeg | 2018/07/14 19:55 | Lucas Miedler v Go Soeda | 6-3,3-6,6-3 |
| Challenger Winnipeg | 2018/07/13 18:10 | Alexis Galarneau v Go Soeda | 0-6,2-6 |
| Challenger Winnipeg | 2018/07/12 20:00 | Yunseong Chung v Go Soeda | 2-6,6-2,4-6 |
| Challenger Winnipeg | 2018/07/10 23:00 | Laurynas Grigelis v Go Soeda | 3-6,0-6 |
| Wimbledon Qual | 2018/06/26 15:30 | Go Soeda v Jurgen Melzer | 3-6,2-6 |
| Wimbledon Qual | 2018/06/25 12:20 | Hugo Dellien v Go Soeda | 4-6,2-6 |
| Challenger Ilkley Qual | 2018/06/18 13:00 | Noah Rubin v Go Soeda | 2-6,6-4,5-3 |
| Challenger Ilkley Qual | 2018/06/17 14:15 | Stefano Napolitano v Go Soeda | 1-6,4-6 |