Stadium: Court 4 Round: 54 Ground: Clay
| 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 Soeda, Go | 6-7,2-6 |
| Challenger Gimcheon | 2018/05/07 08:15 | Park, Uisung v Yusuke Takahashi | 5-7,2-6 |
| Challenger Seoul | 2018/05/01 05:00 | Kamil Majchrzak v Yusuke Takahashi | 6-2,6-3 |
| Taipei, Chinese Taipei | 2018/04/11 10:55 | Yusuke Takahashi v Lo, Chien Hsun | 3-6,7-6,3-6 |
| Taipei, Chinese Taipei | 2018/04/10 10:00 | Chun Hsin Tseng v Yusuke Takahashi | 6-7,1-6 |
| Challenger Almaty Qual | 2018/06/10 06:25 | Khassanov, Roman v Granollers, Gerard | 4-6,1-6 |
| Challenger Almaty Qual | 2018/06/09 07:45 | Granollers, Gerard v Steven Diez | 7-6,6-3 |
| Shymkent, Kazakhstan, Qualifying | 2018/06/03 04:00 | Krawietz, Kevin v Granollers, Gerard | 6-3,3-6,6-3 |
| Shymkent, Kazakhstan, Qualifying | 2018/06/02 04:00 | Granollers, Gerard v Ivan Gakhov | 7-6,6-4 |
| ATP Geneva Qual | 2018/05/19 12:10 | Granollers, Gerard v Dominik Koepfer | 2-6,0-6 |
| Challenger Lisbon Qual | 2018/05/13 10:00 | Juan Pablo Ficovich v Granollers, Gerard | 4-6,7-6,6-1 |
| Challenger Lisbon Qual | 2018/05/12 10:50 | Marcora, Roberto v Granollers, Gerard | 5-7,6-7 |
| Challenger - Glasgow | 2018/05/01 16:45 | Granollers, Gerard v Nikola Milojevic | 6-7,2-6 |