Twist Of Event: Ana Ivanovic Sent Packing By Canadian Teenager After Defeating Serena Williams

Teenager Eugenie Bouchard reached the Australian Open semi-finals with a 5-7 7-5 6-2 win over Ana Ivanovic.

The Canadian, 19, took control after an Ivanovic medical timeout and will face Li Na in the semi-finals after the Chinese star beat Flavia Pennetta.

Seventh seed Tomas Berdych beat third seed David Ferrer 6-1 6-4 2-6 6-4 to become the first man into the semis.

He will meet Stanislas Wawrinka after the Swiss beat four-time champion Novak Djokovic in a five-set thriller.

British doubles number one Dom Inglot and Treat Huey of the Philippines missed out on a first Grand Slam semi-final, losing 6-7 (3-7) 7-6 (8-6) 6-4 to American Eric Butorac and Raven Klaasen of South Africa.

Ana Ivanovic, conqueror of top seed Serena Williams in the previous round, looked on course to reach the semi-finals when she won the first set, finally ending a run of five consecutive breaks of serve.

An inability to hold serve by both players was to prove a theme throughout, with Eugenie Bouchard in particular struggling when tossing the ball into the sun.

But it was the Canadian, who had never previously made it beyond the third round of a Grand Slam, who came out on top in a second set littered with service errors.

She kept her composure after Ivanovic left the court midway through it for treatment and, as the former world number one struggled, Bouchard asserted herself with some aggressive play.

In the decider, the teenager managed to overcome her previous service wobbles, breaking Ivanovic to lead 3-1 and looking comfortable thereafter.

Asked how she was coping with her new-found level of success, Bouchard said: "It's something I've been doing since I was five years old and working my whole life for and sacrificing a lot of things for. So it's not exactly a surprise. I always expect myself to do well.

"I'm just happy to have gone through this step. I'm not done. I have a match on Thursday. I'm just looking forward to that."

Ivanovic said: "I was battling with my right leg since the beginning of the tournament. Then the left one came on today. Despite all that, I was still on court. I was doing my best. Today she was the better player."