Stadium: Court 2 Round: 25 Ground: Clay
| WTA Bogota Qual | 2018/04/07 16:15 | Jacqueline Cako v Elitsa Kostova | 6-7,1-6 |
| WTA Istanbul Qual | 2018/04/23 13:20 | Arantxa Rus v Elitsa Kostova | 6-2,6-0 |
| WTA Istanbul Qual | 2018/04/22 12:00 | Elitsa Kostova v Misaki Doi | 6-4,6-2 |
| WTA Bogota | 2018/04/13 14:00 | Dalila Jakupovic v Elitsa Kostova | 6-2,6-2 |
| WTA Bogota | 2018/04/11 21:00 | Nao Hibino v Elitsa Kostova | 2-6,4-6 |
| WTA Bogota Qual | 2018/04/08 17:30 | Nadia Podoroska v Elitsa Kostova | 4-6,4-6 |
| WTA Bogota Qual | 2018/04/07 16:15 | Jacqueline Cako v Elitsa Kostova | 6-7,1-6 |
| ITF Women Santa Margherita | 2018/03/24 14:00 | Elitsa Kostova v Olga Danilovic | 4-6,2-6 |
| ITF Women Santa Margherita | 2018/03/23 12:00 | Basak Eraydin v Elitsa Kostova | 4-6,1-6 |
| ITF Women Quanzhou | 2018/04/25 05:20 | Saisai Zheng v Jacqueline Cako | 6-4,6-3 |
| ITF Women Quanzhou | 2018/04/24 02:00 | Jacqueline Cako v Jia Qi Ren | 6-1,6-1 |
| WTA Bogota Qual | 2018/04/07 16:15 | Jacqueline Cako v Elitsa Kostova | 6-7,1-6 |
| WTA Monterrey Qual | 2018/03/31 23:00 | Jacqueline Cako v Marie Bouzkova | 3-6,4-6 |
| ITF Women Irapuato | 2018/03/15 20:00 | Jacqueline Cako v Alexa Guarachi | 6-7,4-6 |
| ITF Women Irapuato | 2018/03/13 19:00 | Jacqueline Cako v Andrea R Villarreal | 6-3,3-6,6-1 |
| WTA Acapulco Qual | 2018/02/25 00:00 | Deniz Khazaniuk v Jacqueline Cako | 6-1,6-2 |
| ITF Women Rancho Santa Fe | 2018/02/21 21:50 | Astra Sharma v Jacqueline Cako | 6-2,6-2 |