Xenia Knoll defeated Diana Sumova 6-3 6-1 in the Bad Saarow 10K round of 32 on clay. The upset overturned the form book — Diana Sumova came in leading the head-to-head 1–0. Xenia Knoll claimed a first win over Diana Sumova in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-08-29 | Trimbach 10K | R32 | clay | Diana Sumova | 5-7 6-3 6-2 |
Averages over each player's completed matches in the selected window (31 vs 6). 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