Stanislava Hrozenska defeated Nathalie Vierin 6-4 4-6 7-5 in the Columbus OH 25K round of 16 on hard. The upset overturned the form book — Nathalie Vierin came in leading the head-to-head 2–0. Stanislava Hrozenska claimed a first win over Nathalie Vierin in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-04-12 | Biarritz 25K | R32 | clay | Nathalie Vierin | 7-5 6-4 |
| 2001-06-04 | Galatina 25K | QF | clay | Nathalie Vierin | 7-5 1-6 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.