Matias Oneille defeated Patricio Arquez 6-1 6-1 in the Chile F2 round of 32 on clay. The upset overturned the form book — Patricio Arquez came in leading the head-to-head 2–1, but Matias Oneille had been the form player, winning 5 of their last 10 on clay. That levelled the head-to-head at 2–2.
Oneille M. took it in straight sets.
Matias Oneille beat Patricio Arquez 6-1 6-1. Umpiry, "Matias Oneille vs Patricio Arquez — Chile F2 Round of 32", https://umpiry.com/match/2003-04-14/arquez-vs-oneille-chile-f2-r32?utm_source=cite (as of 14 April 2003).