Plenty of ranked players will take the courts on Saturday in Australia, providing plenty of action for spectators.
One of the matches will feature the No. 1 player in the world, Novak Djokovic.
Let's take a look at his match, as well as two other matches that promise to be entertaining.
No. 9 Janko Tipsarevic vs. No. 17 Richard Gasquet
Gasquet has never made it to the semifinals of the Australian Open. He'd like to get there this year, but he's got his work cut out for him if he's even going to make the quarterfinals.
One person who will be rooting for Gasquet is Novak Djokovic, who has lost to Tipsarevic in the past.
It will be interesting to see if Gasquet can get his career back on track with a big upset in this match.
If he does, he could make it to his first Australian Open semifinals.
No. 1 Novak Djokovic vs. Nicolas Mahut
Djokovic is rolling right now, but Mahut can make things difficult for the world No. 1.
Mahut is a pesky opponent who can extend matches (just ask John Isner).
Djokovic is going to need to dominate this match and not let Mahut hang around if he wants to keep his energy level high as he heads towards the finals.
If Mahut can push this match to five sets, it might make Djokovic fatigued for his future matches.
No. 5 David Ferrer vs. No. 27 Juan Ignacio Chela
Ferrer has had success on hard courts, making it to the semifinals of the Australian Open last year.
He's looking to get back to that level again this year, where he could cause some problems for the likes of Andy Murray and Novak Djokovic.
He shouldn't have too many problems with Chela, who is a better grass court player.
But, if Ferrer is looking ahead to his next match, he could fall victim to an upset.