Stadium: Court 3 Round: 62
| ITF Women Nis Qual | 2018/05/28 07:30 | Tijana Spasojevic v Katarina Kostic | 6-2,6-2 |
| ITF Women Nis Qual | 2018/05/26 12:30 | Katarina Kostic v Ksenija Tmusic | 6-1,6-2 |
| ITF Women Podgorica Qual | 2017/09/16 08:00 | Mila Mejic v Katarina Kostic | 6-1,6-4 |
| ITF Women Vrnjacka Banja | 2017/08/23 11:00 | Katarina Kostic v Vera Markovic | 4-6,4-6 |
| ITF Women Vrnjacka Banja | 2017/08/21 09:15 | Katarina Kostic v Andjela Reljic | 6-4,6-0 |
| ITF Women Prokuplje Qual | 2017/07/09 07:00 | Daniela Vukovic v Katarina Kostic | 6-3,6-3 |
| ITF Women Prokuplje Qual | 2017/07/08 09:30 | Alisa Grachova v Katarina Kostic | 4-6,2-6 |
| ITF Women Prokuplje Qual | 2017/07/01 07:00 | Mihaela Djakovic v Katarina Kostic | 6-1,6-7,6-1 |
| ITF Women Kaposvar | 2018/05/08 14:40 | Adrienn Nagy v Romana Cisovska | 6-2,7-6 |
| ITF Women Kaposvar Qual | 2018/05/07 08:00 | Nikola Breckova v Romana Cisovska | 2-6,6-4,3-6 |
| ITF Women Bratislava Qual | 2016/11/06 09:00 | Romana Cisovska v Vendula Zovincova | 3-6,4-6 |