Mariana Diaz Oliva defeated Radka Bobkova 6-7 6-4 7-5 in the Budapest 50K round of 32 on clay. The upset overturned the form book — Radka Bobkova came in leading the head-to-head 1–0. Mariana Diaz Oliva claimed a first win over Radka Bobkova in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1997-08-04 | Sopot 75K | R16 | clay | Radka Bobkova | 6-3 3-6 6-0 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.