The top five
1. Roger Federer
While Roger Federer is not as dominant as he once was, he is still the best in the game. He wins on all surfaces and his consistency is unmatched. He certainly has a target on his back in 2010, but that has never bothered him before.
2. Rafael Nadal
Rafael Nadal is back in top form after battling injuries that forced him to miss Wimbledon and lose for the first time at Roland Garros. He will be looking to start 2010 off right by defending his 2009 Australian Open title
3. Juan Martin del Potro
“DP” broke through in 2009, capturing his first Grand Slam by upsetting Roger Federer in a five-set U.S. Open final. del Potro has a big serve and huge groundstrokes from both sides. He is young and will only get better.
4. Andy Murray
Andy Murray had a very consistent 2009 on all surfaces. He compiled over 60 match wins, as well as reached a career high #2 ranking back in August. Murray is back from a late season wrist injury and will be a factor throughout 2010.
5. Andy Roddick
So close to a Wimbledon title, losing in an epic five-setter to Federer, Andy Roddick was clearly refocused and in better physical condition in 2009. He shed weight, and as a result, was quicker on the court. In 2010, he will shoot for the major championship that has eluded him since winning the U.S. Open in 2004.
Can they get back into the top 10?
1. Lleyton Hewitt
A former world number one ranked player, Lleyton Hewitt has fallen on hard times over the last few years. In 2009, Hewitt got some of his “mojo” back though and is now ranked 22nd in the world. Now, let’s see if he can get back in and crack the top 10 rankings in 2010.
2. David Ferrer
David Ferrer's career-high ranking was number four in the world back in 2007. David currently sits at number 18 in the ATP rankings. Ferrer can keep up with anyone from the baseline and will look to grind his way back into the top 10 this year.
Can they finally finish a year in the Top 10?
1. Gael Monfils
Gael Monfils reached his career high back in February when he was ranked number nine in the world. He has since fallen back to number 13. Monfils is getting better and more well-rounded each year. If he can improve in the fitness department to get through the tough five-set matches, this year should be the one he finishes the year in the top 10.
2. Gilles Simon
Back during the clay court season, Gilles Simon reached his career-high ranking of six in the world. He is currently ranked 15th. If Simon can play better on the grass and hard courts this year, he could be in the top 10 at year’s end.
How far can these young Americans rise?
1. Sam Querrey
Sam Querrey is currently ranked number 25 in the world. His career-high ranking is 22. Querrey seems to be getting better each year, but his ranking has leveled off in the mid-20s.The year 2010 may be his breakout year and American tennis could use the boost.
2. John Isner
John Isner is currently at his career-high ranking of 34th in the world. Isner has a huge serve that always keeps him in matches and makes him a tough out against anyone. He has had some nice run at the U.S. Open, but will be looking for a consistent year on all surfaces which would lead to a new career-high ranking.