Eleonore Tchakarova defeated Verginie Tchakarova 6-4 6-3 in the W25 Hilton Head Island q32 on clay. The upset overturned the form book — Verginie Tchakarova came in leading the head-to-head 3–2. Eleonore Tchakarova narrowed the head-to-head to 3–3.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-12-16 | W15 Cancun 8 | R16 | hard | Eleonore Tchakarova | 6-3 6-0 |
| 2021-09-05 | W15 Varna 1 | Q64 | clay | Verginie Tchakarova | 6-3 1-3 |
| 2021-05-10 | W25 Salinas | Q32 | hard | Eleonore Tchakarova | 6-3 2-3 |
| 2020-03-10 | W15 Cancun 7 | Q32 | hard | Verginie Tchakarova | 6-3 6-3 |
| 2019-08-26 | W15 Vrnjacka Banja 1 | Q64 | clay | Verginie Tchakarova | 2-6 6-2 11-9 |