Conchita Martinez defeated Julie Halard Decugis 6-1 6-2 in the Roland Garros round of 32 on clay. The upset overturned the form book — Julie Halard Decugis came in leading the head-to-head 1–0, defending last year's quarter-final. Conchita Martinez claimed a first win over Julie Halard Decugis in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-11-08 | Philadelphia | R32 | carpet | Julie Halard Decugis | 7-5 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.