Anne Gaelle Sidot defeated Patty Schnyder 5-7 7-5 6-2 in the Paris round of 32 on carpet. The upset overturned the form book — Patty Schnyder came in leading the head-to-head 2–1, defending last year's round of 16. Anne Gaelle Sidot narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-04-27 | Hamburg | R16 | clay | Patty Schnyder | 3-6 6-3 6-4 |
| 1998-02-18 | Hanover | R32 | carpet | Patty Schnyder | 6-0 6-2 |
| 1997-10-20 | Luxembourg | R32 | hard | Anne Gaelle Sidot | 4-6 6-2 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.