Ignacio Gonzalez King defeated Patricio Arquez 2-4 4-2 5-4 4-2 in the Agentina F9 qualifying round on clay. The upset overturned the form book — Patricio Arquez came in leading the head-to-head 1–0, but Ignacio Gonzalez King had been the form player, winning 2 of their last 5 on clay. Ignacio Gonzalez King claimed a first win over Patricio Arquez in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2000-09-18 | Bolivia F1 | SF | clay | Patricio Arquez | 6-3 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.