Stadium: Court 2 Round: 25 Ground: Clay
| ITF Women Santa Margherita | 2018/09/25 17:15 | Elitsa Kostova v Jule Niemeier | 7-5,6-1 |
| French Open - Kvinder | 2020/09/24 08:00 | Elitsa Kostova v Monica Niculescu | 0-6,7-6,3-6 |
| French Open - Kvinder | 2020/09/22 13:10 | Elitsa Kostova v Gabriela Ce | 7-5,3-6,6-2 |
| ITF W60 - Saint Malo | 2020/09/09 10:00 | Magdalena Frech v Elitsa Kostova | 6-3,6-3 |
| WTA - Prag | 2020/08/30 16:30 | Elitsa Kostova v Martina Di Giuseppe | 5-7,6-3,3-6 |
| UTR Pro Tennis Series - Frankrig - Kvinder | 2020/08/17 07:05 | Arina Gabriela Vasilescu v Elitsa Kostova | 3-6,1-6 |
| UTR Pro Tennis Series - Frankrig - Kvinder | 2020/08/16 12:20 | Carole Monnet v Elitsa Kostova | 6-4,6-3 |
| UTR Pro Tennis Series - Frankrig - Kvinder | 2020/08/15 12:10 | Diana Marcinkevica v Elitsa Kostova | 1-6,7-6,4-10 |
| UTR Pro Tennis Series - Frankrig - Kvinder | 2020/08/14 07:00 | Yvonne Cavalle-Reimers v Elitsa Kostova | 6-7,4-6 |
| ITF W25 - Cherbourg | 2020/10/17 11:30 | Harriet Dart v Jule Niemeier | 6-4,6-4 |
| ITF W25 - Cherbourg | 2020/10/16 10:40 | Georgina Garcia-Perez v Jule Niemeier | 3-6,5-7 |
| ITF W25 - Cherbourg | 2020/10/15 13:10 | Jule Niemeier v Daniela Seguel | 6-4,5-7,6-2 |
| ITF W25 - Cherbourg | 2020/10/14 10:30 | Carole Monnet v Jule Niemeier | 5-7,3-6 |
| ITF W25 - Cherbourg | 2020/10/12 14:45 | Kathinka Von Deichmann v Jule Niemeier | 2-6,3-6 |
| ITF W25 - Cherbourg | 2020/10/11 14:15 | Alice Robbe v Jule Niemeier | 3-6,0-6 |
| ITF W25 - Porto | 2020/10/03 14:00 | Beatriz Haddad Maia v Jule Niemeier | 6-1,7-5 |
| ITF W25 - Porto | 2020/10/01 15:35 | Jule Niemeier v Laura Pigossi | 7-5,6-3 |