Jan Vacek defeated Miloslav Grolmus 6-1 2-6 6-2 in the Czech Republic Masters 2 qualifying round on carpet. The upset overturned the form book — Miloslav Grolmus came in leading the head-to-head 1–0. Jan Vacek claimed a first win over Miloslav Grolmus in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1997-08-18 | Slovak Republic Masters 3 | R16 | clay | Miloslav Grolmus | 6-3 7-6 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.