Cameron Spencer/Getty Images
David Ferrer is a guy who is going to cause a lot of trouble at the US Open. He's a hard worker and he can move, run and retreat better than any player.
Ferrer proved it all at Davis Cup this year. Spain was trailing the US when he took out Andy Roddick and Mardy Fish to give Spain the win. It was a remarkable display of sportsmanship and athleticism.
Ferrer is the most underrated player on the tour. He has been a top 10 player for many years. He has never won a Grand Slam, but he never gave it to his opponent either.
If it's hot and humid, which is usually the case in New York, he is a player that does not struggle.
With the right draw, he could win because he is the fittest and the most tenacious player.