Mariana Diaz Oliva defeated Denisa Chladkova 6-3 7-6 in the Bol round of 32 on clay. The upset overturned the form book — Denisa Chladkova came in leading the head-to-head 1–0, defending last year's round of 16. Mariana Diaz Oliva claimed a first win over Denisa Chladkova in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-07-06 | Prague | R32 | clay | Denisa Chladkova | 7-6 6-0 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (22 vs 13). ATP, WTA & Challenger.