Daniel Yoo defeated Santiago Gonzalez 2-6 6-2 6-3 in the Houston qualifying round of 32 on clay. The upset overturned the form book — Santiago Gonzalez came in leading the head-to-head 2–0. Daniel Yoo claimed a first win over Santiago Gonzalez in three meetings, narrowing the head-to-head to 2–1.
Yoo D. came through in three sets.
Clay: Yoo D. leads 1–0 · Hard: Gonzalez S. leads 2–0
Daniel Yoo beat Santiago Gonzalez 2-6 6-2 6-3. Umpiry, "Daniel Yoo vs Santiago Gonzalez — Houston Qualifying Round of 32", https://umpiry.com/match/2011-04-02/gonzalez-vs-yoo-houston-q32?utm_source=cite (as of 2 April 2011).