Felix Mantilla defeated Mariano Zabaleta 6-2 7-5 in the San Marino round of 32 on clay. The result followed the form book — Felix Mantilla came in defending last year's round of 16. Felix Mantilla extended the head-to-head to 6–5.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-05-03 | Rome Masters | R32 | clay | Mariano Zabaleta | 7-5 6-3 |
| 2003-01-13 | Australian Open | R128 | hard | Felix Mantilla | 4-6 7-5 6-3 4-6 6-4 |
| 2001-09-24 | Palermo | QF | clay | Felix Mantilla | 6-0 2-0 |
| 2001-01-08 | Auckland | R32 | hard | Mariano Zabaleta | 7-5 7-5 |
| 2000-01-17 | Australian Open | R128 | hard | Mariano Zabaleta | 6-1 5-7 6-3 7-6 |
| 1999-05-10 | Rome Masters | R64 | clay | Felix Mantilla | 6-1 |
| 1998-11-09 | Santiago | R32 | clay | Felix Mantilla | 6-2 6-3 |
| 1998-08-03 | Amsterdam | R32 | clay | Mariano Zabaleta | 7-6 6-2 |
| 1996-09-09 | Bournemouth | R16 | clay | Mariano Zabaleta | 6-2 2-6 6-4 |
| 1996-08-12 | Umag | R16 | clay | Felix Mantilla | 6-3 6-3 |
Averages over each player's completed matches in the selected window (200 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