Marta Marrero defeated Klara Koukalova 4-6 7-5 6-0 in the Miami round of 128 on hard. The upset overturned the form book — Klara Koukalova came in leading the head-to-head 4–0. Marta Marrero claimed a first win over Klara Koukalova in five meetings, narrowing the head-to-head to 4–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-05-02 | Berlin | R64 | grass | Klara Koukalova | 6-4 6-1 |
| 2005-01-10 | Hobart | R16 | hard | Klara Koukalova | 6-1 7-5 |
| 2003-07-07 | Palermo | R32 | clay | Klara Koukalova | 6-2 6-3 |
| 2003-03-05 | Indian Wells | R128 | hard | Klara Koukalova | 6-4 6-3 |
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 (11 vs 76). ATP, WTA & Challenger.