Juan Felipe Yanez defeated Damian Patriarca 6-1 4-6 6-3 in the Chile F3 qualifying round on clay. The upset overturned the form book — Damian Patriarca came in leading the head-to-head 3–1. Juan Felipe Yanez narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-10-25 | Chile F2 | R32 | clay | Damian Patriarca | 6-4 4-6 6-1 |
| 2004-03-08 | Chile 1 1 | F | clay | Damian Patriarca | 3-6 7-6(2) 6-0 |
| 2003-11-03 | Venezuela 4 | QF | hard | Damian Patriarca | 7-6(4) 6-4 |
| 2003-06-23 | Italy 3 3 | R32 | clay | Juan Felipe Yanez | 7-5 5-7 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.