Marius Zay defeated Antonio Baldellou Esteva 5-7 6-3 6-3 in the Hungary F6 round of 32 on clay. The upset overturned the form book — Antonio Baldellou Esteva came in leading the head-to-head 1–0. Marius Zay claimed a first win over Antonio Baldellou Esteva in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-02-07 | Spain F2 | R32 | clay | Antonio Baldellou Esteva | 6-2 1-6 6-3 |