Tennis Expert Picks - US Open

Editor's note: In selecting our picks, an "early exit" must be by a player currently ranked in the top 10, and a "sleeper" is someone outside the top 10.

Opinions are like, uh, cell phones -- everybody has one.

The U.S. Open, situated at the end of the Grand Slam season, tends to create some pretty lively debates:

• Based on what we saw in Cincinnati, does Roger Federer have enough left in his tank to win his 17th major title?

• Is Kim Clijsters poised to repeat last year's surprising comeback at the National Tennis Center -- or is Maria Sharapova this year's sleeper champion?

• How will the Americans -- Venus Williams, Andy Roddick, Sam Querrey and Mardy Fish -- compete in their home-turf championship?

Luckily for you, ESPN and have the answers. Our crack staff is never afraid to tackle the big questions: