Justine Henin defeated Miroslava Vavrinec 6-3 6-2 in the US Open round of 32 on hard. The upset overturned the form book — Miroslava Vavrinec came in leading the head-to-head 1–0, defending last year's round of 128. Justine Henin claimed a first win over Miroslava Vavrinec in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-02-08 | Rockford 25K | QF | hard | Miroslava Vavrinec | 6-3 1-6 7-6 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.