Conor Niland defeated Marko Tkalec 6-3 6-4 in the Croatia F4 semi-final on clay. The upset overturned the form book — Marko Tkalec came in leading the head-to-head 2–0. Conor Niland claimed a first win over Marko Tkalec in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-03-26 | Croatia F5 | F | clay | Marko Tkalec | 6-4 7-5 |
| 2006-07-21 | Davis Cup G2 PO: IRL vs SLO | RR | grass | Marko Tkalec | 4-6 6-2 4-6 6-4 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.