Sabine Klaschka defeated Karen Paterson 6-3 6-2 in the Toronto 25K round of 16 on hard. The upset overturned the form book — Karen Paterson came in leading the head-to-head 1–0, but Sabine Klaschka had been the form player, winning 4 of their last 6 on hard. Sabine Klaschka claimed a first win over Karen Paterson in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-10-04 | Glasgow 25K | R32 | hard | Karen Paterson | 6-4 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.