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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.

Serena Williams won't be as dominant, Petra Kvitova will win another Grand Slam and Caroline Wozniacki will return to the Top 5. Those are some of Ravi Ubha's predictions for the 2013 WTA 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.

Two-time French Open finalist Robin Soderling, sidelined by mono the past 18 months, has his sights on a return but concedes that his playing days might be behind him.

Someone needs to fill the big shoes Andy Roddick left. And who better than Sam Querrey (who happens to have really big shoes) to lead the Yanks?

We know Novak Djokovic ruled the World Tour Finals. But a whole lot more went down.

What a treat. In a match rife with momentum changes and drama, the season ended fittingly, with Novak Djokovic barely squeezing by Roger Federer.

Novak Djokovic. He's your world No. 1. Roger Federer. He's your two-time defending champ. Advantage whom at the World Tour Finals?

Novak Djokovic has had his share of troubles this season, but he's looking awfully strong in London.

Roger Federer beats David Ferrer every time they play. But at least the Spaniard can take solace in knowing he's not alone.

Every possible matchup between the big four promises to be spectacular. But which combination is the game's best rivalry?

Ho hum, another Roger Federer demolition at the World Tour Finals. What else is new?

Andy was sure dandy in London earlier this year (see his gold medal for proof). And Murray didn't start off too shabby in front of his home crowd at the World Tour Finals, either.

They've clawed their way to titles all season long. Now the best of the best duke it out at the ATP World Tour Finals.