Stadium: Court 2 Round: 25 Ground: Hardcourt outdoor
| ITF W60 Zagreb | 2019/09/07 09:30 | Cagla Buyukakcay v Kostova, Elitsa | 6-2,6-4 |
| ITF W60 Zagreb | 2019/09/05 13:00 | Kostova, Elitsa v Lottner, Antonia | 6-2,4-6,7-6 |
| ITF W60 Zagreb | 2019/09/04 13:00 | Kostova, Elitsa v Njiric, Silvia | 6-4,6-7,6-3 |
| Bagnatica, Singles Qualifying W-ITF-ITA-19A | 2019/08/30 19:55 | Kostova, Elitsa v Tamara Korpatsch | 7-6,5-7,2-6 |
| Bagnatica, Singles Qualifying W-ITF-ITA-19A | 2019/08/29 19:00 | Kostova, Elitsa v Tessah Andrianjafitrimo | 6-4,6-4 |
| Bagnatica, Singles Qualifying W-ITF-ITA-19A | 2019/08/28 10:15 | Kostova, Elitsa v Lara Salden | 3-6,6-4,6-1 |
| US Open Women | 2019/08/20 17:40 | Kostova, Elitsa v Yanina Wickmayer | 5-7,4-6 |
| Varsovie, Simples W-ITF-POL-02A | 2019/08/08 09:00 | Komardina, Anastasiya v Kostova, Elitsa | 2-6,6-4,6-3 |
| Curtea De Arges, Singles W-ITF-ROU-03A | 2019/09/04 08:20 | Ilona-Georgiana Ghioroaie v Karola Patricia Bejenaru | 6-3,4-6,5-7 |
| ITF W25 Vienna | 2019/08/28 13:40 | Ilona-Georgiana Ghioroaie v Julia Grabher | 3-6,4-6 |
| ITF W25 Vienna | 2019/08/26 10:00 | Ilona-Georgiana Ghioroaie v Gross, Anna | 6-2,6-1 |
| ITF W25 Vienna | 2019/08/25 10:30 | Ilona-Georgiana Ghioroaie v Mamic, Matea | 6-2,6-0 |
| Cordenons, Singles Qualifying W-ITF-ITA-22A | 2019/08/09 15:15 | Ilona-Georgiana Ghioroaie v Scala, Camilla | 2-6,6-3,1-6 |
| Cordenons, Singles Qualifying W-ITF-ITA-22A | 2019/08/08 10:40 | Ilona-Georgiana Ghioroaie v Dentoni, Corinna | 6-1,6-2 |
| Cordenons, Singles Qualifying W-ITF-ITA-22A | 2019/08/07 15:30 | Rubini, Stefania v Ilona-Georgiana Ghioroaie | 1-6,3-6 |
| Sezze, Singles W-ITF-ITA-21A | 2019/08/02 10:30 | Rubini, Stefania v Ilona-Georgiana Ghioroaie | 6-3,6-3 |