Roddick and Federer in semifinal showdown

Roddick and Federer in semifinal showdown
American Andy Roddick faces an Australian Open semifinal showdown against Roger Federer who thrashes Juan Martin del Potro 6-3 6-0 6-0. Roddick wins through after holder Novak Djokovic quits in the intense heat.img src="http://feeds2.feedburner.com/~r/rss/edition_sport/~4/EfVOph0gb5Q" height="1" width="1"/