Daniel Koellerer defeated Ivan Sikula 6-2 6-0 in the Italy 1 4 round of 16 on clay. The result followed the form book — Daniel Koellerer came in leading the head-to-head 1–0. Daniel Koellerer extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-03-03 | Italy 1 3 | QF | clay | Daniel Koellerer | 7-6(2) 2-6 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.