Matteo Colla defeated Igor Zelenay 6-4 6-4 in the Croatia F2 round of 16 on hard. The upset overturned the form book — Igor Zelenay came in leading the head-to-head 1–0. Matteo Colla claimed a first win over Igor Zelenay in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-04-19 | Italy F4 | R16 | clay | Igor Zelenay | 6-4 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.