Nick Lester - Australian Open quarter-final and semi-final preview
Andy Murray has been imperious in the tournament so far, making serene progress into the quarter-finals where he will face the inexperienced Oleksandr Dolgopolov.
However, Roger Federer, Rafael Nadal and Novak Djokovic are cranking it up in Melbourne. Can Murray overcome the world's best to take his maiden Grand Slam title?
Sky Sports commentator Nick Lester previews the remaining quarter-finals in the men's and the women's and looks at the two semi-finals that have already been decided. This is an excerpt from William Hill's In-Play Radio which is live, weekdays from 2pm-10pm and weekends from 12pm-10pm.