Stadium: Indoor C4 Round: 46
| Challenger Gimcheon Qual | 2018/05/05 06:25 | Jinseok Yu v Woobin Shin | 6-2,6-2 |
| ITF Korea F8 | 2016/09/05 01:30 | Sanhui Shin v Jinseok Yu | 7-5,6-3 |
| ITF Korea F8 | 2016/08/28 02:00 | Jinseok Yu v Ji-Ha Kim | 1-6,3-6 |
| Challenger Puerto Vallarta | 2018/05/01 19:05 | Brydan Klein v Felipe Mantilla | 4-6,7-6,1-6 |
| Challenger Guadalajara Qual | 2018/04/15 20:05 | Brydan Klein v James Ward | 5-7,4-6 |
| Challenger Guadalajara Qual | 2018/04/14 22:10 | Andrew Harris v Brydan Klein | 2-6,7-5,6-7 |
| ITF Japan F1 | 2018/03/07 06:00 | Soichiro Moritani v Brydan Klein | 7-6,7-5 |
| Challenger Yokohama Qual | 2018/02/24 05:00 | Brydan Klein v Makoto Ochi | 4-6,6-7 |
| Challenger Kyoto | 2018/02/21 01:30 | John Millman v Brydan Klein | 7-6,6-7,6-3 |
| Challenger Kyoto | 2018/02/20 01:30 | Brydan Klein v Ze Zhang | 6-3,3-6,7-6 |
| Challenger Launceston | 2018/02/06 02:25 | Brydan Klein v Marinko Matosevic | 4-6,6-4,6-7 |