Martin Cuevas defeated Guilherme Clezar 7-6 3-6 6-3 in the Argentina F8 round of 16 on clay. The upset overturned the form book — Guilherme Clezar came in leading the head-to-head 1–0, but Martin Cuevas had been the form player, winning 4 of their last 10 on clay. Martin Cuevas claimed a first win over Guilherme Clezar in two meetings, levelling the head-to-head at 1–1.
Cuevas M. came through in three sets.
Martin Cuevas beat Guilherme Clezar 7-6(5) 3-6 6-3. Umpiry, "Martin Cuevas vs Guilherme Clezar — Argentina F8 Round of 16", https://umpiry.com/match/2011-06-20/clezar-vs-cuevas-argentina-f8-r16?utm_source=cite (as of 20 June 2011).