Alex Calatrava defeated Mariano Zabaleta 7-6 6-2 in the Delray Beach round of 32 on hard. The upset overturned the form book — Mariano Zabaleta came in leading the head-to-head 1–0. Alex Calatrava claimed a first win over Mariano Zabaleta in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2005-02-07 | Buenos Aires | R32 | clay | Mariano Zabaleta | 6-3 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 (129 vs 200). ATP, WTA & Challenger.