Will Nadal's knees hold up long enough?

Updated: January 15, 2010, 8:56 PM ET
ESPN.com

A new season, as always, elicits new surprises and expectations. But there is a general consensus that 2010 could be the beginning of a new paradigm in men's tennis. How much longer will the Roger Federer-Rafael Nadal rivalry live? Is Andy Murray all he is cracked up to be? And who, if anyone, will catapult into the upper echelon of men's tennis?

Is it possible we might see four different Slam winners? The Australian Open invariably opens a new set of questions. But which player will surmount the daunting Melbourne heat -- and stiff competition -- and etch his name into record books appears to be more of a question mark this year than it has been in a long time.

If you're seeking a little advice, we're here for you.

So, who will flourish in Melbourne? Let the experts decide.