Karin Knapp defeated Franziska Etzel 6-4 6-2 in the Lenzerheide 10K semi-final on clay. The upset overturned the form book — Franziska Etzel came in leading the head-to-head 1–0. Karin Knapp claimed a first win over Franziska Etzel in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-04-03 | Putignano 25K | R32 | hard | Franziska Etzel | 6-2 1-6 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.