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 2–0, defending last year's round of 32, but Marlene Weingartner had been the form player, winning 1 of their last 4 on hard. Marlene Weingartner claimed a first win over Adriana Gersi in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-05-24 | Roland Garros | R128 | clay | Adriana Gersi | 6-4 6-0 |
| 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.