Jan Vacek defeated Jan Hernych 6-2 6-1 in the Slovenia Masters 2 round of 32 on clay. The upset overturned the form book — Jan Hernych came in leading the head-to-head 2–1. Jan Vacek narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2000-09-11 | Czech Republic F2 | SF | clay | Jan Hernych | 6-0 4-6 6-4 |
| 2000-03-25 | France F8 | R16 | carpet | Jan Hernych | 7-6(5) 6-2 |
| 1999-10-25 | Czech Republic Masters 2 | SF | carpet | Jan Vacek | 6-4 1-6 6-2 |
Averages over each player's completed matches in the selected window (89 vs 200). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About