Stadium: Court 3 Round: 26 Ground: Hardcourt outdoor
| Les Franqueses Del Valles, Simples W-ITF-ESP-04A | 2019/05/01 11:55 | Kostova, Elitsa v Ivana Popovic | 6-1,6-3 |
| WTA Anning | 2019/04/23 05:55 | Shuai Zhang v Kostova, Elitsa | 4-6,6-2,6-1 |
| WTA - Bogota | 2019/04/08 19:50 | Kostova, Elitsa v Varvara Lepchenko | 3-6,1-6 |
| WTA - Bogota | 2019/04/07 18:25 | Irina Maria Bara v Kostova, Elitsa | 3-6,6-2,6-3 |
| WTA - Bogota | 2019/04/06 19:10 | Kostova, Elitsa v Zoe Hives | 6-7,7-5,6-0 |
| Palm Harbor, Fl, Qualifications Simples W-ITF-USA-08A | 2019/04/05 16:00 | Kovinic, Danka v Kostova, Elitsa | 7-6,3-6,6-2 |
| Palm Harbor, Fl, Qualifications Simples W-ITF-USA-08A | 2019/04/04 15:50 | Honcova, Michaela v Kostova, Elitsa | 2-6,5-7 |
| Palm Harbor, Fl, Qualifications Simples W-ITF-USA-08A | 2019/04/03 17:15 | Carrington, Safiya v Kostova, Elitsa | 0-6,3-6 |
| Les Franqueses Del Valles, Simples W-ITF-ESP-04A | 2019/05/01 13:15 | Eva Guerrero Alvarez v Brouleau, Lou | 7-5,6-3 |
| Obidos, Singles Qualifying W-ITF-POR-01A | 2019/04/13 10:00 | Eva Guerrero Alvarez v Nuria Parrizas-Diaz | 2-6,3-6 |
| Obidos, Singles Qualifying W-ITF-POR-01A | 2019/04/11 12:10 | Eva Guerrero Alvarez v Francisca Jorge | 6-3,6-1 |
| Obidos, Singles Qualifying W-ITF-POR-01A | 2019/04/10 17:25 | Eva Guerrero Alvarez v Marina Bassols Ribera | 7-5,6-4 |
| Obidos, Singles Qualifying W-ITF-POR-01A | 2019/04/02 15:05 | Mirjam Bjorklund v Eva Guerrero Alvarez | 6-1,6-3 |
| ITF W25 Macon | 2019/02/25 14:10 | Georges, Myrtille v Eva Guerrero Alvarez | 6-0,5-7,10-7 |
| ITF W25 Macon | 2019/02/25 08:30 | van Der Hoek, Rosalie v Eva Guerrero Alvarez | 2-6,3-6 |
| Rancho Santa Fe, Ca, Singles W-ITF-USA-05A | 2019/02/19 23:25 | Daniela Seguel v Eva Guerrero Alvarez | 1-6,6-0,7-5 |