Stefan Koubek defeated Juan Carlos Ferrero 7-6 4-6 6-7 6-2 6-3 in the US Open round of 64 on hard. The upset overturned the form book — Juan Carlos Ferrero came in leading the head-to-head 5–2, defending last year's final. Stefan Koubek narrowed the head-to-head to 5–3.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-05-28 | Roland Garros | R64 | clay | Juan Carlos Ferrero | 6-4 7-5 6-3 |
| 2005-08-15 | Cincinnati Masters | R64 | hard | Juan Carlos Ferrero | 0-6 6-3 6-2 |
| 2004-07-05 | Gstaad | R32 | clay | Stefan Koubek | 7-6(4) 6-4 |
| 2004-06-21 | Wimbledon | R64 | grass | Juan Carlos Ferrero | 4-6 7-5 5-7 7-6(6) 8-6 |
| 2002-09-23 | Hong Kong | R32 | hard | Juan Carlos Ferrero | 6-2 6-4 |
| 2002-07-29 | Canada Masters | R32 | hard | Stefan Koubek | 7-5 6-3 |
| 2001-05-28 | Roland Garros | R128 | clay | Juan Carlos Ferrero | 6-2 6-2 6-3 |
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 (170 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About