Mariano Zabaleta defeated Alex Calatrava 6-3 6-2 in the Buenos Aires round of 32 on clay. The upset overturned the form book — Alex Calatrava came in leading the head-to-head 1–0, but Mariano Zabaleta had been the form player, winning 3 of their last 7 on clay. Mariano Zabaleta claimed a first win over Alex Calatrava in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2000-02-28 | Delray Beach | R32 | hard | Alex Calatrava | 7-6(4) 6-2 |
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 25). ATP, WTA & Challenger.