Andrea Glass defeated Fabiola Zuluaga 6-2 6-1 in the Istanbul 75K round of 32 on hard. The upset overturned the form book — Fabiola Zuluaga came in leading the head-to-head 1–0, but Andrea Glass had been the form player, winning 3 of their last 5 on hard. Andrea Glass claimed a first win over Fabiola Zuluaga in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-12-07 | Cali 25K | F | clay | Fabiola Zuluaga | 6-1 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.