Olivier Rochus defeated Stefan Koubek 6-2 6-4 in the Zagreb round of 16 on hard. The upset overturned the form book — Stefan Koubek came in leading the head-to-head 2–1, defending last year's round of 16. Olivier Rochus narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-09-19 | Davis Cup WG PO: AUT vs BEL | RR | clay | Stefan Koubek | 6-7(4) 6-2 7-5 4-6 6-3 |
| 2003-02-17 | Rotterdam | R32 | hard | Olivier Rochus | 6-2 6-1 |
| 2001-04-23 | Atlanta | R32 | hard | Stefan Koubek | 6-3 4-6 6-4 |
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 (174 vs 33). ATP, WTA & Challenger.