Ognjen Samardzic defeated Javier Herrera Eguiluz 6-4 5-7 6-4 in the Mexico F4 qualifying round of 32 on hard. The upset overturned the form book — Javier Herrera Eguiluz came in leading the head-to-head 1–0. Ognjen Samardzic claimed a first win over Javier Herrera Eguiluz in two meetings, levelling the head-to-head at 1–1.
Samardzic O. came through in three sets.
Ognjen Samardzic beat Javier Herrera Eguiluz 6-4 5-7 6-4. Umpiry, "Ognjen Samardzic vs Javier Herrera Eguiluz — Mexico F4 Qualifying Round of 32", https://umpiry.com/match/2013-02-11/eguiluz-vs-samardzic-mexico-f4-q32?utm_source=cite (as of 11 February 2013).