Fernando Gonzalez defeated Stefan Koubek 7-6 6-1 6-2 in the US Open round of 64 on hard. The upset overturned the form book — Stefan Koubek came in leading the head-to-head 3–0, defending last year's round of 128. Fernando Gonzalez claimed a first win over Stefan Koubek in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-10-18 | Madrid Masters | R32 | clay | Stefan Koubek | 6-1 3-6 7-6(5) |
| 2002-07-29 | Canada Masters | R64 | hard | Stefan Koubek | 4-6 7-6(3) 6-3 |
| 2002-01-14 | Australian Open | R16 | hard | Stefan Koubek | 7-5 6-1 6-7(3) 6-2 |
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 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About