Diego Cristin defeated Patricio Rudi 6-4 6-2 in the Argentina F7 round of 32 on clay. The upset overturned the form book — Patricio Rudi came in leading the head-to-head 1–0. Diego Cristin claimed a first win over Patricio Rudi in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-11-15 | Uruguay F1 | R32 | clay | Patricio Rudi | 6-2 6-4 |