[122] Nao Hibino 2-6,4-6 Elitsa Kostova [196] 2018-04-11 21:00
Stadium: Campo 2 Round: 25 Ground: Clay
Home History
| WTA Monterrey | 2018/04/02 23:10 | Lesia Tsurenko v Nao Hibino | 6-7,6-4,6-4 |
| ITF Women Canberra | 2018/03/22 01:25 | Nao Hibino v Abbie Myers | 4-6,6-1,3-6 |
| ITF Women Canberra | 2018/03/19 23:00 | Nao Hibino v Jessica Moore | 7-6,6-3 |
| ITF Women Shenzhen | 2018/03/13 02:00 | Anna Kalinskaya v Nao Hibino | 3-6,7-5,6-3 |
| ITF Women Zhuhai | 2018/03/06 04:35 | Destanee Aiava v Nao Hibino | 6-3,2-6,6-3 |
| WTA Dubai Qual | 2018/02/17 10:15 | Nao Hibino v Camila Giorgi | 2-6,3-6 |
| 2018 Fed Cup | 2018/02/10 06:30 | Yulia Putintseva v Nao Hibino | 6-3,6-4 |
| 2018 Fed Cup | 2018/02/09 05:45 | Chieh-Yu Hsu v Nao Hibino | 6-7,4-6 |
Away History
| 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 Santa Margherita | 2018/03/21 13:05 | Ipek Soylu v Elitsa Kostova | 4-6,0-6 |
| ITF Women Santa Margherita | 2018/03/18 14:00 | Basak Eraydin v Elitsa Kostova | 6-4,6-1 |
| ITF Women Santa Margherita | 2018/03/17 13:00 | Federica Di Sarra v Elitsa Kostova | 5-7,3-6 |
| ITF Women Santa Margherita | 2018/03/16 14:50 | Elitsa Kostova v Anastasia Grymalska | 3-6,7-6,7-5 |