Christopher Diaz Figueroa defeated Roman Borvanov 7-5 1-6 6-4 in the Mexico F4 semi-final on hard. The upset overturned the form book — Roman Borvanov came in leading the head-to-head 1–0. Christopher Diaz Figueroa claimed a first win over Roman Borvanov in two meetings, levelling the head-to-head at 1–1.
Diaz Figueroa C. came through in three sets.
Christopher Diaz Figueroa beat Roman Borvanov 7-5 1-6 6-4. Umpiry, "Christopher Diaz Figueroa vs Roman Borvanov — Mexico F4 Semi-final", https://umpiry.com/match/2011-05-23/borvanov-vs-figueroa-mexico-f4-sf?utm_source=cite (as of 23 May 2011).