The Australian Open is moving into the second week of action and there are a few possible upsets to look out for.
We've already seen Lleyton Hewitt blast his way into week two, and Bernard Tomic make a run at things. The question is, what are the likeliest upsets in week two of the Australian Open?
The draw has given us some interesting matchups and we are certain to see some great tennis. Make sure you watch out for these upsets.
Jelena Jancovic and Bernard Tomic will spring a surprise and cause a couple of upsets in the mixed doubles.
An impressive showing in their opening round match highlighted how dangerous the young Australian and Serbian can be. And with both of them already out of the singles tournament, they can focus on their doubles run.
The unseeded pair will face at least two more seeded pairs on their way through, causing a couple of upsets on the way to the final.
Nadal will come up against Roger Federer in the semifinals, and he won't be able to get past the Swiss perfectionist.
So far in the tournament, Nadal has not been at his best, and Federer will take full advantage of that. When the two square off, it will be Federer who has the freshest legs thanks to a comfortable draw.
The Bryan brothers are favourites to win the men's doubles title, but they will fall short when they meet Polish pair Mariusz Frystenberg and Marcin Matkowski.
The world tour finalists from Poland are the up-and-coming stars of doubles tennis and will spring a surprise when they knock out the Americans.
There has already been a couple of early exits in the doubles, and that could pave the way for Frystenberg and Matkowski to go all the way once they take out Bob and Mike Bryan.
Caroline Wozniacki headed into the Australian Open as the No. 1 seed despite never having won a Grand Slam.
In desperate need of a performance to silence her critics and retain the World No. 1 spot, Wozniacki will fall short.
Up against Kim Clijsters in the fourth round, Wozniacki could be going home very early in week two.
The No. 11 seed Clijsters will need to use all of her experience and overcome a slight ankle injury, but she is more than capable of causing an upset.
Once again Murray seems to have cruised through the opening week, but as usual he will fall short when up against a strong opponent.
This time it will be Kei Nishikori in the quarterfinals who will see off Murray. The new partnership Murray has with Ivan Lendl may well come to fruition this season, but for now, Murray will be leaving Australia early.