Mariaan De Swardt defeated Nathalie Dechy 6-1 6-4 in the Roland Garros round of 128 on clay. Mariaan De Swardt extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-01-11 | Hobart | R32 | hard | Nathalie Dechy | 7-5 6-4 |
| 1998-08-10 | Boston | R16 | hard | Mariaan De Swardt | 6-1 7-6 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.