Vaclav Roubicek defeated Frantisek Cermak 7-5 6-2 in the Croatia 4 Masters 4 round of 32 on clay. The upset overturned the form book — Frantisek Cermak came in leading the head-to-head 1–0, but Vaclav Roubicek had been the form player, winning 4 of their last 6 on clay. Vaclav Roubicek claimed a first win over Frantisek Cermak in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-08-09 | Egypt F3 | F | clay | Frantisek Cermak | 6-2 7-5 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.