Stadium: Court 2 Round: 29 Ground: Hardcourt outdoor
| Challenger Yokohama MD | 2018/03/02 06:25 | Ratiwatana Sa / Ratiwatana So v Ito T / Uesugi K | 5-7,6-2,10-6 |
| Challenger Yokohama MD | 2018/02/28 05:10 | Ratiwatana Sa / Ratiwatana So v Purcell M / Whittington A | 6-3,7-5 |
| Challenger Yokohama MD | 2018/02/26 05:40 | Ratiwatana Sa / Ratiwatana So v Hazawa/Imamura | 6-3,6-4 |
| Challenger Kyoto MD | 2018/02/20 09:25 | Ratiwatana Sa / Ratiwatana So v Gong M-X / Hsieh C-P | 6-7,4-6 |
| Challenger - Chennai - Doubles Hommes | 2018/02/15 10:00 | Ratiwatana Sa / Ratiwatana So v Ilkel C / Petrovic D | 6-7,6-2,8-10 |
| Challenger - Chennai - Doubles Hommes | 2018/02/14 04:30 | Ratiwatana Sa / Ratiwatana So v Anand K / Bendre A | 6-0,6-2 |
| Challenger - Chennai - Doubles Hommes | 2018/02/12 11:05 | Ratiwatana Sa / Ratiwatana So v Sood C / Sood L | 6-0,6-3 |
| Open d'Australie - Doubles Hommes | 2018/01/17 03:15 | Andujar P / Ramos-Vinolas A v Ratiwatana Sa / Ratiwatana So | 6-4,6-4 |
| Challenger Yokohama MD | 2018/03/01 05:10 | Rungkat C / Zhang Z v Kamke T / Puetz T | 3-6,3-6 |
| Challenger Yokohama MD | 2018/02/28 06:30 | Gong M-X / Hsieh C-P v Kamke T / Puetz T | 6-7,6-7 |
| Challenger Yokohama MD | 2018/02/27 06:20 | Kamke T / Puetz T v Balaji/Uchiyama | 6-4,6-3 |
| Challenger Kyoto MD | 2018/02/22 06:45 | Gong M-X / Hsieh C-P v Kamke T / Puetz T | 6-7,6-2,10-3 |
| Challenger Kyoto MD | 2018/02/20 08:05 | Kamke T / Puetz T v Purcell M / Whittington A | 6-4,2-6,10-6 |