| Billie Jean King Cup | 06/24 14:55 | - | Camila Romero v Karen E Contreras | 6-1,6-0 | |
| Billie Jean King Cup | 06/23 15:00 | - | Roxana Valdez v Karen E Contreras | 6-2,7-6 | |
| Fed Cup 2019 | 04/20 16:10 | - | Tangia Riley-Codrington v Karen E Contreras | 3-6,1-6 | |
| Billie Jean King Cup | 04/18 16:40 | - | Noelia Zeballos v Karen E Contreras | 6-2,6-0 | |
| Fed Cup 2019 | 04/17 16:20 | - | Dana Guzman v Karen E Contreras | 6-0,6-0 | |
| Fed Cup 2017 | 07/21 19:45 | 2 | Iesha Shepherd v Karen E Contreras | 6-1,6-0 | |
| Fed Cup 2017 | 07/19 18:45 | 3 | Dominique Schaefer v Karen E Contreras | 6-1,6-0 |