Simone Vagnozzi defeated Nikola Martinovic 6-3 6-1 in the Croatia 1 4 qualifying round on clay. The upset overturned the form book — Nikola Martinovic came in leading the head-to-head 1–0. Simone Vagnozzi claimed a first win over Nikola Martinovic in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-03-08 | Croatia 1 1 | R16 | clay | Nikola Martinovic | 3-6 6-3 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.