Martin Vacek defeated Tomas Cakl 7-5 2-6 7-6 in the Slovak Republic Masters 4 round of 32 on clay. The upset overturned the form book — Tomas Cakl came in leading the head-to-head 1–0. Martin Vacek claimed a first win over Tomas Cakl in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-10-25 | Czech Republic Masters 4 | R32 | carpet | Tomas Cakl | 6-0 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.