Stadium: Court 4 Round: 26 Ground: Hardcourt outdoor
| Challenger Bangkok 1A MD | 2019/02/21 08:30 | Lopez-Perez/Moriya v Ratiwatana/Ratiwatana | 6-3,6-2 |
| Challenger Bangkok 1A MD | 2019/02/20 10:00 | Ratiwatana/Ratiwatana v Naen-Udorn/Saimongkol | 6-1,6-0 |
| Challenger Bangkok MD | 2019/02/13 09:00 | Balaji/Kadhe v Ratiwatana/Ratiwatana | 6-1,6-3 |
| Challenger Launceston MD | 2019/01/29 04:15 | Banes/Ellis v Ratiwatana/Ratiwatana | 6-4,4-6,10-8 |
| Challenger Burnie MD | 2019/01/23 01:00 | Fruttero/Perez Sanz v Ratiwatana/Ratiwatana | 7-5,7-6 |
| Challenger Da Nang MD | 2019/01/11 09:20 | Ratiwatana/Ratiwatana v Hsieh/Rungkat | 6-4,3-6,5-10 |
| Challenger Da Nang MD | 2019/01/10 09:25 | Bega/Viola v Ratiwatana/Ratiwatana | 6-7,1-6 |
| ITF M25 Hong Kong MD | 2019/01/05 06:10 | Ratiwatana/Ratiwatana v Hsu/Imai | 6-4,7-6 |