Stadium: Court 7 Round: 26 Ground: Hardcourt outdoor
| ITF W15 Monastir | 2021/09/29 13:00 | Elena Milovanovic v Petra Marcinko | 2-6,4-6 |
| ITF W15 Šibenik | 2021/05/29 09:00 | Petra Marcinko v Nefisa Berberovic | 5-7,2-6 |
| ITF W15 Šibenik | 2021/05/28 08:55 | Nina Potocnik v Petra Marcinko | 1-6,6-3,5-7 |
| ITF W15 Šibenik | 2021/05/27 08:00 | Petra Marcinko v Tara Wurth | 2-6,6-4,7-6 |
| ITF W15 Šibenik | 2021/05/26 09:45 | Petra Marcinko v Lucie Nguyen Tan | 6-2,6-4 |
| ITF W15 Šibenik | 2021/05/21 08:00 | Petra Marcinko v Darja Vidmanova | 6-4,4-6,1-6 |
| ITF W15 Šibenik | 2021/05/20 08:00 | Hiroko Kuwata v Petra Marcinko | 1-6,6-4,3-6 |
| ITF W15 Šibenik | 2021/05/19 10:05 | Petra Marcinko v Ekaterina Makarova | 6-3,2-6,6-2 |
| ITF W15 Monastir | 2021/09/29 13:00 | Eszter Meri v Julia Stamatova | 6-1,4-6,7-6 |
| ITF W15 Monastir | 2021/09/23 09:30 | Olga Helmi v Eszter Meri | 7-5,6-2 |
| ITF W15 Monastir | 2021/09/22 11:00 | Eszter Meri v Jennifer Luikham | 6-3,6-3 |
| ITF W25 Frýdek Místek | 2021/09/06 08:00 | Alexandra Bozovic v Eszter Meri | 6-2,6-1 |
| ITF W25 Frýdek Místek | 2021/09/05 09:00 | Akvile Parazinskaite v Eszter Meri | 1-6,1-6 |
| ITF W25 Vídeň | 2021/08/29 14:00 | Adriana Rajkovic v Eszter Meri | 7-5,1-6,11-9 |
| ITF W25 Vídeň | 2021/08/29 07:30 | Maria Sara Popa v Eszter Meri | 4-6,2-6 |
| ITF W60 Přerov | 2021/08/23 09:20 | Andrea Gamiz v Eszter Meri | 6-4,6-3 |