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Novak Djokovic is the master of Melbourne. But what obstacles await him in his quest to hoist the trophy for a third straight time?

While Ryan Harrison and Juan Martin del Potro will make strides, 2013 will be the year the Novak Djokovic dominates in the men's tour. Those are some of Ravi Ubha's predictions for the 2013 ATP season.

Radek Stepanek and Janko Tipsarevic faced off after a Davis Cup match while Laura Robson and Heather Watson made history. Ravi Ubha continues the countdown of the Top 100 moments in tennis in 2012.

From Serena Williams consoling Sabine Lisikci, to the Argentinian spat at the Davis Cup semis, tennis was filled with memorable moments. Ravi Ubha begins the countdown of the Top 100 moments in tennis in 2012.

Novak Djokovic was the undisputed winner of the Asian swing. Now, with the World Tour Finals on the horizon, Ravi Ubha sizes up the game's top eight players.

Andy Murray was all giddy with his new gold in London. Serena Williams walloped the field. And then there was Novak Djokovic, who looked anything but dominant.

You know the history between Roger Federer and Rafael Nadal, but perhaps you forgot the details. We rank their top five clashes in this storied history.

It was just one of those days when everything went Roger Federer's way in a straight-sets thumping of Juan Martin del Potro.

Believe it or not, there's more to talk about than the ballyhooed big four in Shanghai. So who are these interlopers?

Nothing went according to script in Canada -- except for Mr. Reliable, Novak Djokovic. But there's no time to revel in another title.

It wasn't business as usual for Rafael Nadal. Actually, despite his reaching the Wimbledon quarterfinals, there's reason for concern.

Who better to parse the Wimbledon field than the grass king himself? Pete Sampras explains why Roger Federer is the favorite to bag another title.

It's safe to say that everyone outside of Rafael Nadal and Novak Djokovic is a dark horse. But here are a few outsiders who could make a run to the second week.

It's not often we see Rafael Nadal's game deteriorate the way it did at Indian Wells. Is Miami the perfect remedy for Rafa?

Vera Zvonareva and Robin Soderling made huge strides last year. But can they take the next step and surmount the Slam challenge?

There's no doubt a mending Juan Martin del Potro will make an impact. But is he ready for the Marcos Baghdatis test Down Under?