Sao Paulo QF: Thomaz Bellucci def. Leonardo Mayer 3-6 6-2 7-5
Crowd was whistling during each Mayer serve, wildly celebrating every first serve missed, and shouting in the middle of points when Leo was about to hit. They clearly thought this was a football match between Brazil and Argentina. Umpire did nothing, Bellucci did nothing. In the end they succeeded in throwing Leo's concentration off at the end of the match.
Completely undeserved win by Bellucci.