Athina Briegel defeated Fruzsina Siklosi 6-4 6-2 in the Estoril 10K semi-final on carpet. The upset overturned the form book — Fruzsina Siklosi came in leading the head-to-head 1–0. Athina Briegel claimed a first win over Fruzsina Siklosi in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1997-07-21 | Dublin 25K | R16 | carpet | Fruzsina Siklosi | 6-4 6-4 |