Stadium: Court 3 Round: 54 Ground: Clay
| ITF Women Tucepi | 2018/04/22 08:00 | Alice Gillan v Marina Pavkovic | 6-4,6-4 |
| ITF Women Tucepi | 2018/04/21 09:30 | Lea Jurkovic v Marina Pavkovic | 0-6,0-6 |
| ITF Women Szekesfehervar | 2018/09/02 08:00 | Justyna Malatinska v Katarina Kostic | 6-2,3-6,6-4 |
| ITF Women Vrnjacka Banja | 2018/08/19 10:00 | Katarina Kostic v Nika Zupancic | 3-6,6-4,2-6 |
| ITF Women Prokuplje | 2018/07/12 08:40 | Katarina Kostic v Barbara Bonic | 0-6,4-6 |
| ITF Women Prokuplje | 2018/07/11 09:00 | Kiara Cvetkovic v Katarina Kostic | 2-6,6-2,2-6 |
| ITF Women Prokuplje Qual | 2018/07/09 07:00 | Costanza Traversi v Katarina Kostic | 4-6,3-6 |
| ITF Women Prokuplje Qual | 2018/06/30 07:00 | Katarina Kostic v Andrijana Stoilkovic | 2-6,2-6 |
| ITF Women Maribor | 2018/06/13 08:00 | Nina Alibalic v Katarina Kostic | 7-5,6-3 |
| ITF Women Maribor Qual | 2018/06/11 08:40 | Katarina Kostic v Emily Morton | 6-2,6-2 |