Federer defeats Blake in Australian quarterfinals
Defending champion Roger Federer underlined his quality with a three-set defeat of James Blake in the Australian Open quarterfinals in Melbourne.
The Swiss number one seed produced only glimpses of his best form to win 7-5, 7-6, 6-4.
Federer will face Serbian world number three Novak Djokovic in the last four.
World number two Rafael Nadal will play unseeded Frenchman Jo-Wilfried Tsonga in the other semi-final.
In the women’s draw, third seed Ana Ivanovic was pushed all the way by Venus Williams before edging to a 7-6, 6-4 victory.
Ivanovic will play Slovakia\'s Daniela Hantuchova in the last-four.
Hantuchova marched into her first Grand Slam semi-final by beating Polish teenager Agnieszka Radwanska 6-2, 6-2.
The other semifinal will feature Maria Sharapova against Jelena Jankovic.