Mislav Hizak defeated Kristijan Mesaros 4-6 7-5 6-4 in the Croatia F7 round of 32 on clay. The upset overturned the form book — Kristijan Mesaros came in leading the head-to-head 3–1, but Mislav Hizak had been the form player, winning 3 of their last 7 on clay. Mislav Hizak narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-06-18 | Serbia F2 | R16 | clay | Mislav Hizak | 7-5 6-2 |
| 2010-08-30 | Croatia F6 | SF | clay | Kristijan Mesaros | 6-1 7-5 |
| 2010-08-16 | Croatia F4 | QF | clay | Kristijan Mesaros | 6-4 6-3 |
| 2009-05-18 | Bosnia & Herzegovina F3 | R16 | clay | Kristijan Mesaros | 6-3 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.