Diana Sumova defeated Sandra Zaniewska 6-4 6-2 in the Alkmaar $10K round of 32 on clay. The upset overturned the form book — Sandra Zaniewska came in leading the head-to-head 1–0. Diana Sumova claimed a first win over Sandra Zaniewska in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-07-04 | Aschaffenburg 25K | Q32 | clay | Sandra Zaniewska | 6-0 6-2 |
Averages over each player's completed matches in the selected window (6 vs 5). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About