Stadium: Quadra 3 Round: 26 Ground: Clay
| Campinas, Singles Qualifying W-ITF-BRA-03A | 2019/03/26 17:35 | Haas, Barbara v Marie Benoit | 6-3,6-2 |
| Curitiba, Singles Qualifying W-ITF-BRA-02A | 2019/03/19 21:05 | Gabriela Ce v Haas, Barbara | 6-4,6-2 |
| Sao Paulo, Singles W-ITF-BRA-01A | 2019/03/13 17:15 | Daniela Seguel v Haas, Barbara | 7-6,5-7,6-3 |
| Fed Cup, Groupe Mondial | 2019/02/09 16:55 | Haas, Barbara v Tahan, Maya | 6-0,7-6 |
| Fed Cup, Groupe Mondial | 2019/02/08 10:30 | Haas, Barbara v Husaric, Anita | 6-2,6-0 |
| Fed Cup, Groupe Mondial | 2019/02/06 10:25 | Haas, Barbara v Ons Jabeur | 6-1,2-6,0-6 |
| Singapour, Simples W-ITF-SGP-04A | 2019/01/25 02:00 | Zhang, Kai Lin v Haas, Barbara | 7-6,6-2 |
| Singapour, Simples W-ITF-SGP-04A | 2019/01/24 02:00 | Olivia Tjandramulia v Haas, Barbara | 2-6,2-6 |
| Campinas, Singles Qualifying W-ITF-BRA-03A | 2019/03/27 13:00 | Kostova, Elitsa v Maria F Herazo Gonzalez | 6-2,6-3 |
| Curitiba, Singles Qualifying W-ITF-BRA-02A | 2019/03/21 13:00 | Kostova, Elitsa v Jasmine Paolini | 2-6,6-4,2-6 |
| Curitiba, Singles Qualifying W-ITF-BRA-02A | 2019/03/20 13:30 | Kurata, Nathaly v Kostova, Elitsa | 4-6,1-6 |
| ITF W25 Macon | 2019/02/26 12:00 | Kostova, Elitsa v Gervais, Julie | 4-6,4-6 |
| ITF W25 Glasgow | 2019/02/21 10:00 | Nuria Parrizas-Diaz v Kostova, Elitsa | 6-2,7-6 |
| ITF W25 Glasgow | 2019/02/20 13:00 | Ene, Cristina v Kostova, Elitsa | 4-6,3-6 |
| ITF W25 Trnava | 2019/02/14 10:00 | Kostova, Elitsa v Tereza Martincova | 3-6,6-7 |
| ITF W25 Trnava | 2019/02/12 12:50 | Romana Cisovska v Kostova, Elitsa | 3-6,4-6 |