Steffi Graf defeated Julie Halard Decugis 6-2 6-2 in the San Diego round of 32 on hard. The upset overturned the form book — Julie Halard Decugis came in leading the head-to-head 1–0. Steffi Graf 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 |
|---|---|---|---|---|---|
| 1999-05-10 | Berlin | QF | grass | Julie Halard Decugis | 5-7 6-4 6-4 |