Katarina Kachlikova defeated Petra Dizdar 6-1 3-6 6-3 in the Siroki Brijeg 10K round of 32 on clay. The upset overturned the form book — Petra Dizdar came in leading the head-to-head 2–0. Katarina Kachlikova claimed a first win over Petra Dizdar in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-07-21 | Ancona 10K | R16 | clay | Petra Dizdar | 6-3 6-4 |
| 2001-10-15 | Makarska 10K | QF | clay | Petra Dizdar | 6-4 6-1 |