The Rod Laver Arena is expected to be jam-packed on Thursday as Novak Djokovic takes on Roger Federer in a much-awaited semi-final.
The semi-final at Australian Open will be the 45th match between these two. They are currently tied at 22-22.
Last time Federer defeated Djokovic was in 2012 at the Wimbledon, where he went on to win the tournament which was his 17th major title.
In 2015, Djokovic defeated Federer in Wimbledon, as well as US Open final.