Matea Mezak defeated Anna Lena Groenefeld 7-6 1-6 6-3 in the Tipton 10K qualifying round on hard. The upset overturned the form book — Anna Lena Groenefeld came in leading the head-to-head 2–0. Matea Mezak claimed a first win over Anna Lena Groenefeld in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-09-06 | Denain 75K | R32 | clay | Anna Lena Groenefeld | 1-6 7-6(2) 7-5 |
| 2003-01-20 | Hull 10K | R16 | hard | Anna Lena Groenefeld | 6-3 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.