Barbara Sobaszkiewicz defeated Natalia Kolat 6-2 6-1 in the Torun 25K round of 32 on clay. The upset overturned the form book — Natalia Kolat came in leading the head-to-head 1–0. Barbara Sobaszkiewicz claimed a first win over Natalia Kolat in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-06-27 | Torun 50K | Q16 | clay | Natalia Kolat | 6-4 6-2 |