Carlos Berlocq defeated Patricio Arquez 6-3 6-3 in the Chile 1 1 round of 32 on clay. The upset overturned the form book — Patricio Arquez came in leading the head-to-head 2–0, but Carlos Berlocq had been the form player, winning 3 of their last 7 on clay. Carlos Berlocq claimed a first win over Patricio Arquez in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2000-09-25 | Bolivia F2 | R32 | clay | Patricio Arquez | 4-6 6-4 6-4 |
| 2000-07-24 | Argentina F7 | R16 | clay | Patricio Arquez | 6-4 7-6(3) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.