Stadium: Court 4 Round: 27 Ground: Hardcourt outdoor
| Challenger Yokohama MD | 2018/02/26 05:55 | Altuna/Hurkacz v Rungkat/Zhang | 4-6,2-6 |
| Challenger Yokohama MD | 2018/02/27 06:40 | Klein/Margaroli v Peng/Siljestrom | 7-6,6-7,6-10 |
| Challenger Kyoto MD | 2018/02/21 07:35 | Soeda/Uchiyama v Peng/Siljestrom | 6-4,6-4 |