Third seed Serena Williams eased into the Australian Open fourth round on Saturday but defending champion Victoria Azarenka was made to work hard and play "ugly" to stay in the tournament.
Serena Williams hits a return during her match against Ayumi Morita of Japan on the sixth day of the Australian Open in Melbourne, on January 19, 2013. Williams won 6-1, 6-3.
Five-time champion Williams powered past Japan's Ayumi Morita 6-1, 6-3 after a minor second-set wobble, but it was much tougher for the top seed who survived a scare before beating injured American Jamie Hampton in three sets.
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