Marlene Weingartner defeated Adriana Gersi 7-5 6-2 in the Pattaya round of 32 on hard. The upset overturned the form book — Adriana Gersi came in leading the head-to-head 2–1, defending last year's round of 32. Marlene Weingartner narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-05-24 | Roland Garros | R128 | clay | Adriana Gersi | 6-4 6-0 |
| 1999-03-01 | Dubai 75K | R32 | hard | Marlene Weingartner | 6-3 6-4 |
| 1997-03-01 | Fed Cup WG1 QF: GER vs CZE | RR | hard | Adriana Gersi | 6-2 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.