| Denmark Open Women | 10/21 10:00 | - | Zhi Yi Wang v Chaiwan, Phittayaporn | L | 2-0 | |
| Denmark Open Women | 10/20 07:00 | 5 | Chaiwan, Phittayaporn v Ratchanok Intanon | W | 2-0 | |
| Uber Cup Women | 10/14 18:20 | - | Ester Nurumi Tri Wardoyo v Chaiwan, Phittayaporn | W | 0-2 | |
| Uber Cup Women | 10/12 07:30 | - | Chaiwan, Phittayaporn v Ania Setien | W | 2-0 | |
| Uber Cup Women | 10/10 08:30 | - | Chaiwan, Phittayaporn v Lauren Middleton | W | 2-0 | |
| Sudirman Cup Women | 09/27 13:40 | - | Chaiwan, Phittayaporn v Nella Nyqvist | W | 2-0 | |
| Orléans Masters - Femmes | 03/24 08:55 | 5 | Busanan Ongbamrungphan v Chaiwan, Phittayaporn | L | 2-0 | |
| Open d'Angleterre - Femmes | 03/18 14:00 | 4 | Pornpawee Chochuwong v Chaiwan, Phittayaporn | L | 2-0 | |
| Open d'Angleterre - Femmes | 03/17 16:40 | 5 | Chaiwan, Phittayaporn v Lianne Tan | W | 2-0 | |
| Open de Suisse - Femmes | 03/05 13:20 | 3 | Chaiwan, Phittayaporn v Mia Blichfeldt | L | 0-2 | |
| Open de Suisse - Femmes | 03/04 09:40 | 4 | Chaiwan, Phittayaporn v Sung, Ji Hyun | W | 2-0 | |
| Open de Suisse - Femmes | 03/03 15:30 | 5 | Nehwal, Saina v Chaiwan, Phittayaporn | W | 1-2 | |
| Open de Thaïlande - Femmes | 01/20 02:40 | 5 | Chaiwan, Phittayaporn v Se Young An | L | 0-2 | |
| Open de Thaïlande - Femmes | 01/12 04:25 | 5 | Chaiwan, Phittayaporn v Ga Eun Kim | L | 0-2 | |
| Open d'Angleterre - Femmes | 03/11 12:20 | 5 | Chaiwan, Phittayaporn v Line Højmark Kjaersfeldt | L | 1-2 | |
| Masters d'Espagne - Femmes | 02/21 15:20 | 3 | Carolina Marin v Chaiwan, Phittayaporn | L | 2-0 | |
| Masters d'Espagne - Femmes | 02/20 14:15 | 4 | Iris Wang v Chaiwan, Phittayaporn | W | 1-2 | |
| Asia Team Championships Women | 02/13 04:00 | - | Chaiwan, Phittayaporn v Choirunnisa, Choirunnisa | W | 2-0 | |
| Masters de Thaïlande - Femmes | 01/23 06:00 | 4 | Akane Yamaguchi v Chaiwan, Phittayaporn | L | 2-0 | |
| Masters de Thaïlande - Femmes | 01/22 07:30 | 5 | Lianne Tan v Chaiwan, Phittayaporn | W | 0-2 | |
| Syed Modi Int. Women | 12/01 09:30 | 1 | Carolina Marin v Chaiwan, Phittayaporn | L | 2-0 | |
| Syed Modi Int. Women | 11/30 08:50 | 2 | Chaiwan, Phittayaporn v Das, Rituparna | W | 2-0 | |
| Syed Modi Int. Women | 11/29 09:00 | 3 | Chaiwan, Phittayaporn v Zhi Yi Wang | W | 2-0 | |
| Syed Modi Int. Women | 11/28 11:20 | 4 | Buranaprasertsuk, Porntip v Chaiwan, Phittayaporn | W | 0-2 | |
| Syed Modi Int. Women | 11/27 07:00 | 5 | Chaiwan, Phittayaporn v Pornpawee Chochuwong | W | 2-1 | |
| Korea Masters Women | 11/20 01:20 | 5 | Kirsty Gilmour v Chaiwan, Phittayaporn | L | 2-0 | |
| Macau Open 2019, WS | 10/30 07:40 | 5 | Chaiwan, Phittayaporn v Cheung, Ngan Yi | L | 0-2 | |
| Chinese Taipei Open 2019, WS | 09/06 11:00 | 3 | Chaiwan, Phittayaporn v Michelle Li | L | 0-2 | |
| Chinese Taipei Open 2019, WS | 09/05 06:05 | 4 | Yi-Ting Hung v Chaiwan, Phittayaporn | W | 0-2 | |
| Chinese Taipei Open 2019, WS | 09/04 07:50 | 5 | Chaiwan, Phittayaporn v Jucharoen, Chananchida | W | 2-0 |