Second seed Roger Federer [ Images ] marched into the semi-finals of the Australian Open [ Images ] with a 7-5, 6-4, 5-7, 6-3 win over Argentina's David Nalbandian [ Images ] on Wednesday.

The Swiss, who has dropped just two sets in the tournament, overcame Nalbandian in just over two-and-a-half hours to set up a showdown with world number three Juan Carlos Ferrero [ Images ] on Friday.

Federer snatched the first set from eighth seed Nalbandian with a break in the 12th game.

In the second, the Wimbledon [ Images ] champion twice recovered from a break down to stretch his lead.

Nalbandian pulled a set back when he broke Federer in the 11th game of the third but the Swiss wrapped it up by winning the fourth set.