The Czech Republic's Marketa Vondrousova crashed out of the U.S. Open in the second round when Belarusian Aliaksandra Sasnovich beat the 12th seed 6-1 6-2 on Wednesday.
Factbox on Japan's Naomi Osaka, who beat Victoria Azarenka of Belarus 1-6 6-3 6-3 to win the U.S. Open title on Saturday.
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