Stadium: Court 5 Round: 27 Ground: Hardcourt outdoor
| Challenger Busan MD | 2018/05/20 03:00 | Roelofse/Smith v Hsieh/Rungkat | 4-6,3-6 |
| Challenger Busan MD | 2018/05/18 02:00 | Hsieh/Rungkat v Bury/Peng | 6-4,4-6,10-6 |
| Challenger Busan MD | 2018/05/17 04:50 | Banes/Ellis v Hsieh/Rungkat | 4-6,3-6 |
| Challenger Busan MD | 2018/05/15 05:40 | Chung/Lee v Hsieh/Rungkat | 6-7,1-6 |
| Challenger Gimcheon MD | 2018/05/10 06:00 | Hsieh/Rungkat v Nielsen/Pospisil | 3-6,3-6 |
| Challenger Gimcheon MD | 2018/05/09 02:00 | Hsieh/Rungkat v Tokuda/Trongcharoenchaikul | 6-2,7-6 |
| Challenger Seoul MD | 2018/05/03 09:20 | Hsieh/Rungkat v Matsui/Nielsen | 6-7,1-6 |
| Challenger Seoul MD | 2018/05/01 08:35 | Hsieh/Rungkat v Kim/Lim | 6-4,3-6,10-2 |