Stefan Koubek defeated Roger Federer 7-6 7-5 in the Vienna quarter-final on hard. The upset overturned the form book — Roger Federer came in leading the head-to-head 4–0, defending last year's semi-final. Stefan Koubek claimed a first win over Roger Federer in five meetings, narrowing the head-to-head to 4–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-06-23 | Wimbledon | R64 | grass | Roger Federer | 7-5 6-1 6-1 |
| 2003-04-28 | Munich | SF | clay | Roger Federer | 6-2 6-1 |
| 2002-03-11 | Indian Wells Masters | R32 | hard | Roger Federer | 6-4 6-4 |
| 2002-01-28 | Milan | R32 | carpet | Roger Federer | 7-6(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 (200 vs 200). ATP, WTA & Challenger.
Performance in the biggest moments — break points, deciding sets and tiebreaks (0–100, higher is better). About