| Denmark Masters Women Qual | 2021/08/05 14:20 | Ann-Sofie Husher Ruus v Stern, Ronja | W | 1-2 |
| Open de Pologne - Femmes - Qualif. | 2021/03/25 16:00 | Simona Pilgaard v Stern, Ronja | L | 2-1 |
| Open de Pologne - Femmes - Qualif. | 2021/03/25 15:00 | Mair, Judith v Stern, Ronja | W | 1-2 |
| US Open Women Qual | 2019/07/09 20:20 | Lauren Lam v Stern, Ronja | L | 2-0 |
| Canada Open Women | 2019/07/03 17:00 | Buranaprasertsuk, Porntip v Stern, Ronja | L | 2-0 |
| Spanish Int. Women Qual | 2019/06/13 09:20 | Stern, Ronja v Hoyaux, Yaelle | W | 2-0 |
| Sudirman Cup Women | 2019/05/24 10:40 | Ma, Louisa v Stern, Ronja | L | 2-1 |
| Sudirman Cup Women | 2019/05/20 03:30 | Stern, Ronja v Gerda Voitechovskaja | W | 2-0 |
| Denmark Masters Women Qual | 2021/08/05 13:00 | Topp, Sofie Loeth v Ivorra, N. | W | 0-2 |
| Spain Int Women | 2021/06/18 08:30 | Beatriz Corrales v Ivorra, N. | L | 2-0 |
| Spain Int Women | 2021/06/17 12:20 | Ivorra, N. v Katerina Tomalova | W | 2-0 |
| Spain Int Women Qual | 2021/06/16 11:40 | Malya Hoareau v Ivorra, N. | W | 0-2 |
| Lithuanian Int. Women | 2021/06/11 12:40 | Katrin Neudolt v Ivorra, N. | L | 2-0 |
| Masters d'Espagne - Femmes | 2021/05/21 12:40 | Ivorra, N. v Leonice Huet | L | 0-2 |
| Masters d'Espagne - Femmes | 2021/05/20 11:15 | Ivorra, N. v Cristina Teruel | W | 2-0 |
| Portuguese Int. Women Qual | 2021/05/06 17:20 | Grundtvig, Sophia v Ivorra, N. | L | 2-0 |