Stadium: Centre Court Round: 62 Ground: Clay
| ITF W60 Grodzisk Mazowiecki | 2021/07/25 13:55 | Katerina Mandelikova v Marcelina Podlinska | 6-2,6-7,11-9 |
| ITF W60 Olomouc | 2021/07/19 09:50 | Elizabeth Halbauer v Katerina Mandelikova | 6-2,6-3 |
| ITF W60 Olomouc | 2021/07/18 08:00 | Nicole Gadient v Katerina Mandelikova | 3-6,4-6 |
| ITF W25 Wroclaw | 2021/06/27 08:00 | Barbora Miklova v Katerina Mandelikova | 2-6,6-4,10-2 |
| ITF W25 Otocec | 2021/05/31 11:00 | Katerina Mandelikova v Iva Primorac | 1-6,1-6 |
| ITF W25 Otocec | 2021/05/30 08:00 | Katerina Mandelikova v Laura Mair | 6-4,4-6,11-9 |
| ITF W15 Sibenik | 2021/05/23 08:00 | Katerina Mandelikova v Lisa-Marie Rioux | 2-6,1-6 |
| ITF W25 Frydek Mistek | 2020/09/13 09:00 | Katerina Mandelikova v Polina Leykina | 3-6,2-6 |
| ITF W60 Grodzisk Mazowiecki | 2021/07/25 13:55 | Ewa Samberger v Mika D Fruchtman | 1-6,2-6 |
| ITF W25 Wroclaw | 2021/06/27 09:30 | Ewa Samberger v Anna Ozerova | 1-6,4-6 |