David Nalbandian defeated Patricio Arquez 6-3 6-4 in the Argentina F3 round of 32 on clay. The upset overturned the form book — Patricio Arquez came in leading the head-to-head 1–0, but David Nalbandian had been the form player, winning 4 of their last 6 on clay. David Nalbandian claimed a first win over Patricio Arquez in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-11-08 | Argentina F5 | R32 | clay | Patricio Arquez | 1-6 7-6 6-3 |
Averages over each player's completed matches in the selected window (200 vs 1). 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. Small sample — read as indicative. About