Australian Open: Ana Ivanovic caused an upset by beating Serena Williams in three sets

By Tim Clement - Twitter: <a href='http://bit.ly/FP5zDY' class='instorylink'>@SkyTimClement</a>

Sunday 19 January 2014 12:38, UK

Ana Ivanovic dumped world No 1 Serena Williams out of the Australian Open with a fourth round 4-6 6-3 6-3 victory on Sunday.

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