Lucie Kriegsmannova defeated Sandra Martinovic 2-6 6-4 6-4 in the Plzen 10K qualifying round on carpet. The upset overturned the form book — Sandra Martinovic came in leading the head-to-head 2–0. Lucie Kriegsmannova claimed a first win over Sandra Martinovic in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-08-28 | Vienna 10K | R16 | clay | Sandra Martinovic | 6-2 7-6(2) |
| 2006-06-19 | Davos 10K | SF | clay | Sandra Martinovic | 4-6 6-3 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.