Katharina Holert defeated Cecilia Estlander 6-4 6-2 in the Tampere 10K round of 32 on clay. The upset overturned the form book — Cecilia Estlander came in leading the head-to-head 1–0, but Katharina Holert had been the form player, winning 3 of their last 9 on clay. Katharina Holert claimed a first win over Cecilia Estlander in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-06-14 | Alkmaar 10K | R32 | clay | Cecilia Estlander | 6-2 4-6 6-4 |