Diego Hartfield defeated Patricio Arquez 6-4 6-4 in the Chile F3 round of 32 on clay. The upset overturned the form book — Patricio Arquez came in leading the head-to-head 1–0, but Diego Hartfield had been the form player, winning 4 of their last 10 on clay. Diego Hartfield claimed a first win over Patricio Arquez in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2000-09-25 | Bolivia F2 | QF | clay | Patricio Arquez | 6-3 3-6 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.