Stadium: Court 1 Round: 26 Ground: Hardcourt indoor
| Challenger Nottingham | 2018/06/12 11:00 | Cameron Norrie v Tatsuma Ito | 6-1,5-7,3-6 |
| Challenger Busan | 2018/05/15 02:00 | Tatsuma Ito v Yasutaka Uchiyama | 2-6,7-6,6-4 |
| Challenger Gimcheon | 2018/05/08 06:15 | Jason Jung v Tatsuma Ito | 6-3,5-7,7-6 |
| Challenger Seoul | 2018/05/05 07:15 | Mackenzie McDonald v Tatsuma Ito | 6-4,7-6 |
| Challenger Seoul | 2018/05/04 05:00 | Tatsuma Ito v Di Wu | 7-5,3-6,6-2 |
| Challenger Seoul | 2018/05/03 01:30 | Tatsuma Ito v Seong Chan Hong | 7-5,6-1 |
| Challenger Seoul | 2018/05/01 07:05 | Tatsuma Ito v Duckhee Lee | 6-1,6-3 |
| Challenger Nanchang | 2018/04/17 03:00 | Yunseong Chung v Tatsuma Ito | 6-4,7-6 |
| Challenger Nottingham | 2018/06/12 12:30 | Brayden Schnur v Filip Peliwo | 6-3,6-2 |
| Challenger Nottingham Qual | 2018/06/11 12:15 | Brayden Schnur v Matt Reid | 7-5,6-1 |
| Challenger Nottingham Qual | 2018/06/10 15:00 | Brayden Schnur v Brydan Klein | 2-6,6-4,6-4 |
| Challenger Nottingham Qual | 2018/06/09 16:05 | Brayden Schnur v Luke Saville | 6-4,5-7,6-2 |
| Challenger Surbiton Qual | 2018/06/02 11:00 | Brayden Schnur v Evan King | 3-6,5-7 |
| Challenger Busan | 2018/05/15 02:00 | Brayden Schnur v Mackenzie McDonald | 6-2,2-6,1-6 |
| Challenger Gimcheon | 2018/05/08 04:25 | Brayden Schnur v Max Purcell | 7-6,1-6,3-6 |
| Challenger Seoul | 2018/05/01 03:00 | Vasek Pospisil v Brayden Schnur | 4-6,6-1,6-3 |