| Akita Masters 2019, WS | 2019/08/14 04:10 | Mainaky, Lyanny Alessandra v Chaiwan, Phittayaporn | W | 1-2 |
| Hyderabad Open 2019, WS | 2019/08/10 09:10 | Jia Min Yeo v Chaiwan, Phittayaporn | L | 2-1 |
| Hyderabad Open 2019, WS | 2019/08/09 09:10 | Zhang, Y. v Chaiwan, Phittayaporn | W | 1-2 |
| Hyderabad Open 2019, WS | 2019/08/08 07:15 | Tam, Brittney v Chaiwan, Phittayaporn | W | 0-2 |
| Hyderabad Open 2019, WS | 2019/08/07 08:50 | Gummadi, Vrushali v Chaiwan, Phittayaporn | W | 0-2 |
| Thailand Open Women | 2019/07/31 08:30 | Nehwal, Saina v Chaiwan, Phittayaporn | L | 2-0 |
| Thailand Open 2019, WS, Qualification | 2019/07/30 05:25 | Jucharoen, Chananchida v Chaiwan, Phittayaporn | W | 1-2 |
| Spanish Int. Women | 2019/06/15 15:00 | Kirsty Gilmour v Chaiwan, Phittayaporn | W | 0-2 |
| Akita Masters 2019, WS | 2019/08/14 04:10 | Lauren Lam v Saito, Shiori | W | 0-2 |
| Vietnam Int. Women | 2019/04/12 06:30 | Ayustine, Dinar Dyah v Saito, Shiori | L | 2-1 |
| Vietnam Int. Women | 2019/04/10 03:00 | Saito, Shiori v Peng, Li Ting | W | 2-0 |
| Osaka Int. Women | 2019/04/06 04:00 | Kawakami, Saena v Saito, Shiori | L | 2-0 |
| Giraldilla Int. XD | 2018/09/23 07:00 | Mitani, Minatsu v Saito, Shiori | L | 2-0 |
| Giraldilla Int. XD | 2018/09/22 07:00 | Saito, Shiori v Yulia Y Susanto | W | 2-0 |
| Giraldilla Int. XD | 2018/09/21 09:00 | Saito, Shiori v Hartawan, Ruselli | W | 2-1 |
| Open de Suisse - Doubles Femmes - Qualif. | 2018/09/20 08:00 | Saito, Shiori v Putri Kusuma Wardani | W | 2-0 |