Erik Csarnakovics defeated Marian Leysek 6-2 4-6 6-2 in the Portugal 2 4 round of 32 on hard. The upset overturned the form book — Marian Leysek came in leading the head-to-head 1–0. Erik Csarnakovics claimed a first win over Marian Leysek in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2001-07-16 | Slovak Rep F6 | R32 | clay | Marian Leysek | 7-6(4) 7-6(5) |