Estadio: Court 3 Round: 25 Ground: Clay
| ITF Saint-Malo - Femenino | 2018/09/18 10:20 | Elitsa Kostova v Cagla Buyukakcay | 6-7,4-6 |
| ITF Biarritz - Femenino | 2018/09/12 13:25 | Carina Witthoeft v Elitsa Kostova | 6-4,7-6 |
| ITF Zagreb - Femenino | 2018/09/06 16:50 | Elitsa Kostova v Tena Lukas | 6-1,2-6,3-6 |
| ITF Zagreb - Femenino | 2018/09/05 16:15 | Elitsa Kostova v Agnes Bukta | 6-3,6-4 |
| ITF Women Budapest | 2018/08/28 09:00 | Raluca Georgiana Serban v Elitsa Kostova | 6-2,7-5 |
| US Open - Femenino | 2018/08/21 16:15 | Elitsa Kostova v Fiona Ferro | 1-6,7-5,4-6 |
| ico - CIBACOPAMexiko - CIBA | 2018/07/27 10:40 | Elitsa Kostova v Richel Hogenkamp | 6-7,7-6,2-6 |
| ico - CIBACOPAMexiko - CIBA | 2018/07/26 13:10 | Elitsa Kostova v Lucrezia Stefanini | 6-2,6-4 |
| ITF Santa Margherita di Pula - Femenino | 2018/09/24 12:00 | Jule Niemeier v Carolina Alves | 7-6,4-6,6-4 |
| ITF Santa Margherita di Pula - Femenino | 2018/09/23 16:30 | Jule Niemeier v Siqi Cao | 6-4,6-1 |
| ITF Santa Margherita di Pula - Femenino | 2018/09/21 10:00 | Kristina Kucova v Jule Niemeier | 6-2,6-2 |
| ITF Santa Margherita di Pula - Femenino | 2018/09/19 12:00 | Jule Niemeier v Chiara Scholl | 6-1,6-1 |
| ITF Santa Margherita di Pula - Femenino | 2018/09/17 15:40 | Jule Niemeier v Karin Kennel | 6-2,6-4 |
| ITF Santa Margherita di Pula - Femenino | 2018/09/16 15:45 | Jule Niemeier v Alessandra Crump | 6-1,6-3 |
| ITF Braunschweig - Femenino | 2018/08/26 09:00 | Jule Niemeier v Anastasia Zarycka | 1-6,3-6 |
| ITF Braunschweig - Femenino | 2018/08/25 14:45 | Jule Niemeier v Greta Arn | 0-6,6-0,7-6 |