Stadium: Court 3 Round: 25 Ground: Hardcourt indoor
| Singapour, Simples W-ITF-SGP-04A | 2019/01/25 02:00 | Kostova, Elitsa v Lin Zhu | 3-6,2-6 |
| Singapour, Simples W-ITF-SGP-04A | 2019/01/24 02:00 | Kostova, Elitsa v Charmaine Shi Yi Seah | 6-3,6-0 |
| Singapour, Simples W-ITF-SGP-04A | 2019/01/22 03:40 | Kostova, Elitsa v Broady, Naomi | 6-2,6-2 |
| Singapour, Simples W-ITF-SGP-04A | 2019/01/17 02:00 | Kostova, Elitsa v Sharipova, Sabina | 3-6,6-2,4-6 |
| Singapour, Simples W-ITF-SGP-04A | 2019/01/16 02:00 | Kostova, Elitsa v Charmaine Shi Yi Seah | 6-2,6-2 |
| Open d'Australie - Femmes | 2019/01/08 03:10 | Kostova, Elitsa v Gibbs, Nicole | 4-6,2-6 |
| ITF Women Las Vegas | 2018/11/07 19:35 | Kostova, Elitsa v Fanny Stollar | 3-6,3-6 |
| ITF Women Toronto | 2018/10/31 14:00 | Kostova, Elitsa v Zimmermann, Kimberley | 2-6,4-6 |
| ITF W25 Trnava | 2019/02/05 11:15 | Poznikhirenko, Ganna v Martina Colmegna | 6-4,6-1 |
| ITF W25 Trnava | 2019/02/04 14:30 | Poznikhirenko, Ganna v Romana Cisovska | 6-3,6-2 |
| ITF W25 Kazan | 2019/01/23 07:00 | Poznikhirenko, Ganna v AL Nabhani, Fatma | 6-7,6-3,2-6 |
| ITF Women Minsk | 2018/11/05 12:50 | Poznikhirenko, Ganna v Ekaterina Yashina | 6-3,6-4 |
| Santa Margherita Di Pula, Simples W-WITF-ITA-27A | 2018/11/02 16:30 | Martina Trevisan v Poznikhirenko, Ganna | 6-3,3-6,6-3 |
| Santa Margherita Di Pula, Simples W-WITF-ITA-27A | 2018/11/01 09:00 | Lucia Bronzetti v Poznikhirenko, Ganna | 6-2,1-6,2-6 |
| Santa Margherita Di Pula, Simples W-WITF-ITA-27A | 2018/10/30 19:25 | Poznikhirenko, Ganna v Pella, Catalina | 3-6,6-4,6-1 |
| Santa Margherita Di Pula, Simples W-WITF-ITA-27A | 2018/10/24 12:00 | Zarycka, Anastatsia v Poznikhirenko, Ganna | 6-7,6-1,6-3 |