Mariano Zabaleta defeated Jan Vacek 6-1 3-6 6-3 6-4 in the Roland Garros round of 128 on clay. The upset overturned the form book — Jan Vacek came in leading the head-to-head 1–0. Mariano Zabaleta claimed a first win over Jan Vacek in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2001-09-10 | Costa Do Sauipe | R16 | hard | Jan Vacek | 3-6 6-4 7-6(6) |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (200 vs 73). ATP, WTA & Challenger.