Zuzana Zlochova defeated Katharina Negrin 6-2 6-2 in the Portschach 10K round of 32 on clay. The upset overturned the form book — Katharina Negrin came in leading the head-to-head 1–0. Zuzana Zlochova claimed a first win over Katharina Negrin in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2010-07-05 | Brussels 10K | QF | clay | Katharina Negrin | 6-2 2-6 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.