Stadium: Centre Court Round: 26 Ground: Hardcourt outdoor
| Bangkok, Thaïlande, Doubles | 2019/02/13 09:00 | Balaji N. S / Kadhe A v Ratiwatana Sa / Ratiwatana So | 6-1,6-3 |
| Challenger Launceston MD | 2019/01/29 04:15 | Banes M / Ellis B v Ratiwatana Sa / Ratiwatana So | 6-4,4-6,10-8 |
| Challenger - Burnie - Doubles Hommes | 2019/01/23 01:00 | Fruttero J-P / Perez Sanz D v Ratiwatana Sa / Ratiwatana So | 7-5,7-6 |
| Challenger Da Nang MD | 2019/01/11 09:20 | Ratiwatana Sa / Ratiwatana So v Hsieh C-P / Rungkat C | 6-4,3-6,5-10 |
| Challenger Da Nang MD | 2019/01/10 09:25 | Bega A / Viola M v Ratiwatana Sa / Ratiwatana So | 6-7,1-6 |
| Hong Kong, Doubles M-ITF-HKG-04A | 2019/01/05 06:10 | Ratiwatana Sa / Ratiwatana So v Hsu Y H / Imai S | 6-4,7-6 |
| Hong Kong, Doubles M-ITF-HKG-04A | 2019/01/04 06:35 | Ratiwatana Sa / Ratiwatana So v Hassan B / Lenz J | 3-6,6-1,12-10 |
| Hong Kong, Doubles M-ITF-HKG-04A | 2019/01/03 12:40 | Ratiwatana Sa / Ratiwatana So v Saito T / Sekiguchi S | 7-6,6-2 |
| Bangkok, Thaïlande, Doubles | 2019/02/12 09:25 | Naen-Udorn C / Saimongkol P v Gong M-X / Zhang Z | 0-6,0-6 |