Sjeng Schalken defeated Roger Federer 3-6 7-5 6-3 in the s Hertogenbosch quarter-final on grass. The upset overturned the form book — Roger Federer came in leading the head-to-head 5–0, defending last year's semi-final. Sjeng Schalken claimed a first win over Roger Federer in six meetings, narrowing the head-to-head to 5–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-06-23 | Wimbledon | QF | grass | Roger Federer | 6-3 6-4 6-4 |
| 2003-03-17 | Miami Masters | R16 | hard | Roger Federer | 6-3 6-2 |
| 2003-02-17 | Rotterdam | QF | hard | Roger Federer | 6-2 6-4 |
| 2003-02-07 | Davis Cup WG R1: NED vs SUI | RR | carpet | Roger Federer | 7-6(2) 6-4 7-5 |
| 2001-08-27 | US Open | R32 | hard | Roger Federer | 6-4 7-5 7-6(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 (172 vs 200). ATP, WTA & Challenger.