Stephanie Halsell defeated Carla Tiene 6-2 6-1 in the Poza Rica 10K round of 32 on hard. The upset overturned the form book — Carla Tiene came in leading the head-to-head 1–0. Stephanie Halsell claimed a first win over Carla Tiene in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-05-17 | CD Juarez 10K | F | hard | Carla Tiene | 6-7 6-1 7-6 |