Nuno Marques defeated Erik Csarnakovics 6-3 6-3 in the Portugal 2 3 round of 16 on hard. The upset overturned the form book — Erik Csarnakovics came in leading the head-to-head 1–0. Nuno Marques claimed a first win over Erik Csarnakovics in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2000-10-09 | Portugal 2 1 | QF | hard | Erik Csarnakovics | 6-3 2-6 7-5 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.