Tatjana Malek defeated Katie Obrien 6-2 6-0 in the Istanbul 25K round of 32 on hard. Tatjana Malek extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-02-23 | Biberach 50K | R16 | hard | Katie Obrien | 6-3 6-0 |
| 2006-10-23 | Istanbul 25K | SF | hard | Tatjana Malek | 1-0 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.