Vaclav Roubicek defeated Matthias Muller 6-2 7-5 in the Yugoslavia F1 qualifying round on clay. The upset overturned the form book — Matthias Muller came in leading the head-to-head 1–0, but Vaclav Roubicek had been the form player, winning 3 of their last 5 on clay. Vaclav Roubicek claimed a first win over Matthias Muller in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-07-26 | Egypt F1 | R16 | clay | Matthias Muller | 6-3 6-7 7-6 |