Stadium: Court 2 Round: 25 Ground: Clay
| ITF Women Prokuplje Qual | 2018/07/09 13:10 | Jelena Lukic v Kiara Cvetkovic | 3-6,6-7 |
| ITF Women Prokuplje Qual | 2018/07/09 07:00 | Le Yi Liu v Kiara Cvetkovic | 2-6,5-7 |
| ITF Women Prokuplje Qual | 2018/07/08 09:30 | Kiara Cvetkovic v Tara Damnjanovic | 6-4,6-3 |
| ITF Women Klosters | 2018/06/17 09:10 | Yana Morderger v Kiara Cvetkovic | 6-1,6-0 |
| ITF Women Klosters | 2018/06/16 10:00 | Kiara Cvetkovic v Ayline Esina Samardzic | 7-5,6-2 |
| ITF Women Chiasso Qual | 2018/04/14 08:00 | Fiona Ganz v Kiara Cvetkovic | 6-3,6-3 |
| ITF Women Mallorca | 2018/02/11 09:30 | Olga Esteve Mendez v Kiara Cvetkovic | 6-0,6-2 |
| ITF Women Mallorca | 2018/02/05 08:45 | Kiara Cvetkovic v Sofia Nami Samavati | 2-6,1-6 |
| 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 |
| ITF Women Maribor Qual | 2018/06/10 11:35 | Taro Keens v Katarina Kostic | 2-6,1-6 |
| ITF Women Maribor Qual | 2018/06/09 07:30 | Ayline Esina Samardzic v Katarina Kostic | 5-7,2-6 |
| ITF Women Banja Luka Qual | 2018/06/02 14:00 | Katarina Kostic v Romana Cisovska | 5-7,3-6 |
| ITF Women Nis Qual | 2018/05/28 07:30 | Tijana Spasojevic v Katarina Kostic | 6-2,6-2 |