| Polish Open - naised - kval | 2024/03/20 12:40 | Clara Lassaux v Frederikke Ostergaard | W | 1-2 |
| Dutch Int. Naised | 2024/03/15 14:20 | Petra Maixnerova v Frederikke Ostergaard | L | 2-0 |
| Dutch Int. Naised | 2024/03/15 10:10 | Frederikke Ostergaard v Clara Lassaux | W | 2-1 |
| Rootsi lahtised meistrivõistlused - naised | 2024/01/19 16:40 | Frederikke Ostergaard v Devika Sihag | L | 1-2 |
| Rootsi lahtised meistrivõistlused - naised | 2024/01/19 11:20 | Hristomira Popovska v Frederikke Ostergaard | W | 1-2 |
| Spanish Int. - naised | 2023/11/16 08:20 | Sofie Karmann v Frederikke Ostergaard | L | 2-0 |
| Spanish Int. - naised | 2023/11/14 15:00 | Wei Xu v Frederikke Ostergaard | W | 1-2 |
| Hungarian Int. - naised | 2023/11/02 16:15 | Milena Schnider v Frederikke Ostergaard | L | 2-0 |
| Iceland Int. - kval - naised | 2024/01/25 19:30 | Ioanna Pissi v Juliana K. Johansdottir | L | 1-2 |
| Iisraeli lahtised meistrivõistlused - naised | 2022/10/28 07:40 | Ioanna Pissi v Dounia Pelupessy | L | 0-2 |
| Bulgarian Int. - naised | 2022/10/07 08:35 | Grammatoula Sotiriou v Ioanna Pissi | L | 2-0 |
| Cyprus Int. - naised | 2021/10/15 13:35 | Ioanna Pissi v Heli Neiman | L | 0-2 |
| Bulgarian Int. - naised - kval | 2021/10/07 11:00 | Ioanna Pissi v Lisa Curtin | L | 0-2 |
| Hellas Int. – naised – kval | 2021/09/02 13:00 | Theodora Fragoulidou v Ioanna Pissi | W | 0-2 |
| Swedish Open - naised - kval | 2020/01/16 13:40 | Frederikke Toft v Ioanna Pissi | L | 2-0 |