Henrieta Nagyova defeated Naoko Sawamatsu 6-4 6-4 in the Luxembourg round of 16 on hard. The upset overturned the form book — Naoko Sawamatsu came in leading the head-to-head 2–0. Henrieta Nagyova claimed a first win over Naoko Sawamatsu in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1997-09-15 | Tokyo | R32 | hard | Naoko Sawamatsu | 2-6 6-4 6-1 |
| 1997-01-28 | Tokyo | R32 | hard | Naoko Sawamatsu | 4-6 6-3 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.