Andrea Sieveke defeated Matea Mezak 7-5 4-6 6-2 in the Grado 25K round of 16 on clay. The upset overturned the form book — Matea Mezak came in leading the head-to-head 1–0. Andrea Sieveke claimed a first win over Matea Mezak in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-05-22 | La Palma 25K | R32 | hard | Matea Mezak | 6-3 6-4 |