Andrea Collarini defeated Denis Zivkovic 6-7 6-3 6-2 in the Croatia F1 qualifying round on clay. Andrea Collarini extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-01-30 | USA F4 | R32 | clay | Andrea Collarini | 6-4 6-2 |
| 2010-07-05 | USA F17 | QF | clay | Denis Zivkovic | 6-3 7-6(6) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.