Stadium: Court 12 Round: 62
| ITF Women Maribor Qual | 2018/06/10 11:35 | Keens, Taro v Kostic, Katarina | 2-6,1-6 |
| ITF Women Maribor Qual | 2018/06/09 07:30 | Ayline Esina Samardzic v Kostic, Katarina | 5-7,2-6 |
| ITF Women Banja Luka Qual | 2018/06/02 14:00 | Kostic, Katarina v Romana Cisovska | 5-7,3-6 |
| ITF Women Nis Qual | 2018/05/28 07:30 | Spasojevic, Tijana v Kostic, Katarina | 6-2,6-2 |
| ITF Women Nis Qual | 2018/05/26 12:30 | Kostic, Katarina v Tmusic, Ksenija | 6-1,6-2 |
| ITF Women Podgorica Qual | 2017/09/16 08:00 | Mejic, Mila v Kostic, Katarina | 6-1,6-4 |
| ITF Women Vrnjacka Banja | 2017/08/23 11:00 | Kostic, Katarina v Markovic, Vera | 4-6,4-6 |
| ITF Women Vrnjacka Banja | 2017/08/21 09:15 | Kostic, Katarina v Reljic, Andjela | 6-4,6-0 |
| ITF Women Maribor Qual | 2018/06/10 10:30 | Kastelic, Zoel v Morton, Emily | 2-6,0-6 |
| ITF Women Maribor Qual | 2018/06/09 07:30 | Natalie Barbir v Morton, Emily | 4-6,6-4,1-6 |
| ITF Women Solarino | 2018/03/05 13:15 | Yana Morderger v Morton, Emily | 6-2,6-0 |
| ITF Women Solarino | 2018/02/25 10:30 | Morton, Emily v Crescenzi, Giulia | 2-6,2-6 |
| ITF Women Oslo | 2017/11/14 12:05 | Kulik, Wiktoria v Morton, Emily | 6-4,6-1 |
| ITF Women Sunderland | 2017/10/30 11:00 | Ghodrati, Lily v Morton, Emily | 6-2,6-4 |
| ITF Women Guimaraes | 2017/06/10 12:00 | Cirotte, Chloe v Morton, Emily | 6-0,6-1 |
| ITF Women Montemor-o-Novo | 2017/05/27 09:00 | Morton, Emily v Moreno Barranquero, Angeles | 1-6,5-7 |