
Katarzyna Piter defeated Mona Barthel 6-3 6-3 in the Stockholm 25K round of 16 on hard. The upset overturned the form book — Mona Barthel came in ranked #208, leading the head-to-head 1–0. Katarzyna Piter claimed a first win over Mona Barthel in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-01-31 | Sutton 25K | QF | hard | Mona Barthel | 7-5 7-6(6) |
Averages over each player's completed matches in the selected window (155 vs 200). 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