Mariano Zabaleta defeated Tommy Robredo 3-6 6-3 6-1 in the Hamburg round of 32 on clay. The upset overturned the form book — Tommy Robredo came in leading the head-to-head 4–1, but Mariano Zabaleta had been the form player, winning 2 of their last 6 on clay. Mariano Zabaleta narrowed the head-to-head to 4–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-05-12 | Hamburg | R32 | clay | Tommy Robredo | 6-4 6-2 |
| 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 |
| 2003-05-12 | Hamburg Masters | R32 | clay | Mariano Zabaleta | 3-6 6-3 6-1 |
| 2002-08-26 | US Open | R128 | hard | Tommy Robredo | 6-2 6-7 7-5 4-6 7-6 |
Averages over each player's completed matches in the selected window (167 vs 200). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About