Igor Zelenay defeated Ladislav Simon 6-1 6-3 in the Slovak Rep F5 round of 16 on clay. The upset overturned the form book — Ladislav Simon came in leading the head-to-head 1–0. Igor Zelenay claimed a first win over Ladislav Simon in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2001-03-12 | Croatia 1 1 | QF | clay | Ladislav Simon | 4-6 6-2 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.