Gisela Dulko produces the first upset on the women's side, defeating Victoria Azarenka 6-1, 6-2 in the first round of the US Open.
Azarenka, who is 2-5 since retiring at Marbella with a leg injury, left the grounds without doing her press conference.
For Dulko, who came into the event on a four-match losing streak, it is the latest in a series of wins over big names. She defeated Maria Sharapova at Wimbledon last year, Ana Ivanovic at the Australian Open and Justine Henin at Indian Wells.