Dismal day for top seed Azarenka
The 22-year-old went on a 26-match winning streak at the start of 2012, including picking up her first grand slam title at the Australian Open, but she has struggled to find her form all week.
Azarenka almost went out in the first round, fighting back from a set and 4-0 down against Alberta Brianti, but yesterday she could not recover and was beaten 6-2 7-6 (7/4) by the 15th seed.