Ivanovic knocks Williams out of Australian Open

Ana Ivanovic survived a tough encounter with Venus Williams to book her place in the semi-finals of the Australian Open today.

The number four seed completed a 7-6 (7/3) 6-4 victory to enjoy a first career triumph over the American and set up a last four clash with Daniela Hantuchova, who beat Agnieszka Radwanska earlier in the day.