Stadium: Court Central Round: 25
| WTA Luxembourg | 2018/10/14 11:50 | Elitsa Kostova v Arantxa Rus | 2-6,3-6 |
| WTA Luxembourg | 2018/10/13 19:35 | Indy De Vroome v Elitsa Kostova | 3-6,2-6 |
| ITF Women Santa Margherita | 2018/10/02 13:50 | Reka-Luca Jani v Elitsa Kostova | 7-5,4-6,6-1 |
| ITF Women Santa Margherita | 2018/09/28 12:00 | Elitsa Kostova v Ludmilla Samsonova | 3-6,4-6 |
| ITF Women Santa Margherita | 2018/09/27 12:00 | Elitsa Kostova v Irene Burillo Escorihuela | 6-0,5-7,6-2 |
| ITF Women Santa Margherita | 2018/09/25 17:15 | Elitsa Kostova v Jule Niemeier | 7-5,6-1 |
| ITF Women Saint Malo | 2018/09/18 10:20 | Elitsa Kostova v Cagla Buyukakcay | 6-7,4-6 |
| ITF Women Biarritz | 2018/09/12 13:25 | Carina Witthoeft v Elitsa Kostova | 6-4,7-6 |
| WTA Quebec City | 2018/09/08 17:15 | Jada Bui v Maria Mateas | 4-6,1-6 |
| ITF Women Granby | 2018/07/24 14:00 | Ellen Perez v Jada Bui | 6-4,6-3 |
| ITF Women Gatineau Qual | 2018/07/14 16:55 | Jada Bui v Maria Jose Portillo Ramirez | 5-7,3-6 |
| ITF Women Winnipeg Qual | 2018/07/08 18:50 | Lorraine M. Guillermo v Jada Bui | 6-3,6-1 |
| ITF Women Winnipeg Qual | 2018/07/07 18:00 | Keira Blackbeard v Jada Bui | 1-6,2-6 |
| ITF Women Corroios-Seixal | 2018/06/30 11:30 | Jada Bui v Francesca Segarelli | 4-6,3-6 |
| ITF Women Guimaraes | 2018/06/23 09:00 | Lauren Proctor v Jada Bui | 6-2,5-7,7-6 |