Nicole Riner defeated Annalisa Bona 6-7 6-3 6-3 in the Portschach 10K semi-final on clay. The upset overturned the form book — Annalisa Bona came in leading the head-to-head 1–0. Nicole Riner claimed a first win over Annalisa Bona in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-04-06 | Sibenik 10K | QF | clay | Annalisa Bona | 7-5 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.