Stadium: Court 4 Round: 62 Ground: Clay
| ITF W25 Trieste | 2021/09/01 08:00 | Veronika Erjavec v Nika Radisic | 1-6,6-7 |
| ITF W25 Trieste | 2021/08/31 07:30 | Veronika Erjavec v Krystyna Pochtovyk | 6-4,6-3 |
| ITF W25 Trieste | 2021/08/30 07:30 | Veronika Erjavec v Margherita Marcon | 6-2,6-0 |
| ITF W25 Vrnjacka Banja | 2021/08/18 07:30 | Lina Gjorcheska v Veronika Erjavec | 7-6,2-6,6-4 |
| ITF W25 Vrnjacka Banja | 2021/08/17 07:30 | Veronika Erjavec v Eva Garkusha | 1-6,6-3,10-5 |
| ITF W25 Vrnjacka Banja | 2021/08/16 08:00 | Veronika Erjavec v Tchakarova, Eleonore | 6-1,6-1 |
| ITF W25 Vrnjacka Banja | 2021/08/15 08:30 | Veronika Erjavec v Bianca E Barbulescu | 6-3,6-0 |
| ITF W15 Cordenons | 2021/08/01 08:00 | Mana Kawamura v Veronika Erjavec | 7-6,7-5 |
| ITF W60 Prague | 2021/08/29 09:30 | Lena Papadakis v Krtenova, Sonja | 6-0,6-1 |
| ITF W60 Prerov | 2021/08/22 09:00 | Maileen Nuudi v Krtenova, Sonja | 3-6,6-3,10-4 |
| UTR Pro Tennis Series Ricany Women | 2021/07/03 15:30 | Denisa Pospisilova v Krtenova, Sonja | 6-3,5-2 |
| UTR Pro Tennis Series Ricany Women | 2021/07/03 07:00 | Luisa Meyer Auf Der Heide v Krtenova, Sonja | 6-0,6-3 |
| UTR Pro Tennis Series Ricany Women | 2021/07/01 08:00 | Jana Kareisova v Krtenova, Sonja | 5-7,4-6 |
| UTR Pro Tennis Series Ricany Women | 2021/06/29 09:30 | Nova, Andrea v Krtenova, Sonja | 6-2,6-4 |
| UTR Pro Tennis Series Ricany Women | 2021/06/28 08:00 | Krtenova, Sonja v Karolina Vlckova | 4-6,1-6 |
| UTR Pro Tennis Series Ricany Women | 2021/06/26 12:00 | Krtenova, Sonja v Petruzelova, Marketa | 4-6,1-6 |