Mariano Puerta advanced when Mariano Zabaleta retired 4-6 6-3 4-0 in the San Marino quarter-final. Mariano Puerta claimed a first win over Mariano Zabaleta in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-02-14 | Costa Do Sauipe | R32 | hard | Mariano Zabaleta | 6-4 6-2 |
| 1998-11-02 | Bogota | R16 | hard | Mariano Zabaleta | 3-6 6-3 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 (199 vs 200). ATP, WTA & Challenger.