Mariano Zabaleta defeated Mariano Puerta 6-4 6-2 in the Costa Do Sauipe round of 32 on hard. The result followed the form book — Mariano Zabaleta came in defending last year's round of 32. Mariano Zabaleta extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-11-02 | Bogota | R16 | hard | Mariano Zabaleta | 3-6 6-3 6-4 |
| 1998-08-10 | San Marino | QF | clay | Mariano Puerta | 4-6 6-3 4-0 RET |
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 (67 vs 60). ATP, WTA & Challenger.