Juan Pablo Guzman defeated Juan Antonio Marin 6-3 6-2 in the Vina del Mar qualifying round of 16 on clay. The upset overturned the form book — Juan Antonio Marin came in leading the head-to-head 1–0, defending last year's round of 16, but Juan Pablo Guzman had been the form player, winning 6 of their last 8 on clay. Juan Pablo Guzman claimed a first win over Juan Antonio Marin in two meetings, levelling the head-to-head at 1–1.
Guzman J. took it in straight sets.
Juan Pablo Guzman beat Juan Antonio Marin 6-3 6-2. Umpiry, "Juan Pablo Guzman vs Juan Antonio Marin — Vina del Mar Qualifying Round of 16", https://umpiry.com/match/2007-01-28/guzman-vs-marin-vina-del-mar-q16?utm_source=cite (as of 28 January 2007).