Matea Mezak defeated Monica Niculescu 5-7 6-4 7-5 in the Makarska 10K round of 32 on clay. The upset overturned the form book — Monica Niculescu came in leading the head-to-head 2–0. Matea Mezak claimed a first win over Monica Niculescu in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-09-11 | Sofia 25K | R16 | clay | Monica Niculescu | 6-2 6-2 |
| 2003-04-14 | Dubrovnik 10K | QF | clay | Monica Niculescu | 6-3 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.