Julie Thu defeated Julie Steven 6-7 6-4 6-0 in the Mexico City DF 25K round of 16 on hard. The upset overturned the form book — Julie Steven came in leading the head-to-head 1–0, but Julie Thu had been the form player, winning 2 of their last 4 on hard. Julie Thu claimed a first win over Julie Steven in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-04-12 | Las Vegas 25K | R32 | hard | Julie Steven | 7-5 6-3 |