Mariaan De Swardt defeated Nathalie Dechy 6-1 7-6 in the Boston round of 16 on hard. The upset overturned the form book — Nathalie Dechy came in leading the head-to-head 1–0. Mariaan De Swardt claimed a first win over Nathalie Dechy in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-01-11 | Hobart | R32 | hard | Nathalie Dechy | 7-5 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.