Mariano Zabaleta defeated Tommy Robredo 3-6 6-3 6-1 in the Hamburg Masters round of 32 on clay. The upset overturned the form book — Tommy Robredo came in leading the head-to-head 3–0, defending last year's semi-final, but Mariano Zabaleta had been the form player, winning 2 of their last 6 on clay. Mariano Zabaleta claimed a first win over Tommy Robredo in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-05-10 | Hamburg Masters | R32 | clay | Tommy Robredo | 6-4 6-2 |
| 2004-04-12 | Estoril | R16 | clay | Tommy Robredo | 6-1 7-6(6) |
| 2002-08-26 | US Open | R128 | hard | Tommy Robredo | 6-2 6-7(3) 7-5 4-6 7-6(5) |
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 (166 vs 200). ATP, WTA & Challenger.