| Hungarian Int. Women Qual | 2019/10/30 11:00 | Prozorova, Anastasiya v Kozyreva, Viktoriia | W | 1-2 |
| Bulgarian Open Women Qual | 2019/08/12 11:10 | Kozyreva, Viktoriia v Harris, Abbygael | W | 2-0 |
| Russia Open 2019, WS | 2019/07/18 03:00 | Hayashi, Moto v Kozyreva, Viktoriia | L | 2-0 |
| Russia Open 2019, WS | 2019/07/17 04:00 | Kozyreva, Viktoriia v Budarina, Inga | W | 2-0 |
| Lithuanian Int. Women Qual | 2019/06/06 12:25 | Radovska, Monika v Kozyreva, Viktoriia | L | 2-0 |
| Sudirman Cup Women | 2019/05/24 10:40 | Ma, Louisa v Stern, Ronja | W | 2-1 |
| Sudirman Cup Women | 2019/05/22 03:30 | Frost, Kate v Ma, Louisa | W | 0-2 |
| Sudirman Cup Women | 2019/05/19 10:30 | Ma, Louisa v Fu, Sally | W | 2-1 |
| New Zealand Open 2019, WS | 2019/05/01 04:40 | Fitriani Fitriani v Ma, Louisa | L | 2-0 |
| New Zealand Open 2019, WS | 2019/04/30 20:00 | Fitriani Fitriani v Ma, Louisa | L | 2-0 |
| Indonesia Masters XD | 2018/05/20 03:00 | Nozomi Okuhara v Ma, Louisa | L | 2-0 |
| Giraldilla Int. XD | 2018/05/10 03:00 | Ma, Louisa v Ji, S. | L | 0-2 |
| Giraldilla Int. XD | 2018/05/09 01:30 | Hemrachatanun, Mattana v Ma, Louisa | W | 0-2 |