Maria Joao Koehler defeated Karin Knapp 3-6 6-3 6-3 in the Australian Open round of 128 on hard. The result followed the form book — Maria Joao Koehler came in defending last year's round of 128. Maria Joao Koehler extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2011-01-31 | Rabat 25K | SF | clay | Maria Joao Koehler | 2-6 6-2 6-2 |
| 2010-11-15 | Mallorca 10K | QF | clay | Karin Knapp | 6-3 2-6 6-4 |
Averages over each player's completed matches in the selected window (18 vs 137). 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