Every year a player emerges with insane fantasy value that no one expected to be great. Five years ago it was Kurt Warner who wowed us with insane numbers. One year later DeAngelo Williams put up some insane numbers down the stretch and most people who drafted him got him in the tenth round.
Three years ago the sleeper was Jamaal Charles. No one even knew who he was and what he could be but he lived up to the hype and made a difference in the fantasy playoffs. Two years ago it was Arian Foster and Michael Vick. Most people knew Foster was going to be good and got him as early as round four but no one knew that Vick was going to go nuts especially since he was Kolb's backup that season.
Last year it was Cam Newton. In most leagues Newton went undrafted after a lackluster performance in the preseason. Each one of those guys was able to help be difference makers and most of thier owners were able to win a fantasy championship because they were gotten in the later rounds of the draft or acquired in free agency.
This year there are a few fantasy sleepers to keep your eyes on.
Jonathan Dwyer (Pittsburgh Steelers) RB - The Steelers will be looking for a workhorse to replace Mendenhall. Redman will get the initial start but Dwyer may just be ready to take the workload away and never give it back.
Torrey Smith (Baltimore Ravens) WR - Outside of Mike Wallace, Torrey Smith is the most dangerous receiver in the league. He gets overshadowed by Boldin but his talent is worthy of a risk pick.
T.Y. Hilton (Indianapolis Colts) WR - Hilton could very well be the go to guy that a rookie quarterback leans on. These two could grow together like Harrison and Manning did.
Ryan Williams (Arizona Cardinals) RB - Williams can be that guy as he has already proved. Chris Wells can't stay healthy and Williams will get his share of touches this season.
Titus Young (Detroit Lions) WR - With Megatron getting all the attention Young will get his share of single coverage and quite frankly he should destroy it. This kid is a number one in a number two situation. Grab him when you can.
Darius Heyward-Bey (Oakland Raiders) WR - Late last year there weren't many better than Heyward-Bey. This year he should be the go to guy for Carson Palmer.
Alshon Jeffrey (Chicago Bears) WR - Playing beside Brandon Marshall should be enough to warrant risking a pick on this guy. Marshall will see double teams all day. Jeffrey is a talent and he should do quite well as a rookie this season.
Daniel Thomas (Miami Dolphins) RB - Thomas is a must grab. The Dolphins will lean on Reggie Bush a lot but Bush hasn't been healthy that much in his career. Thomas could be that guy who breaks loose and separates himself from the rest.
C.J. Spiller (Buffalo Bills) RB - C.J. is a beast, he just needs touches to prove it. If Fred Jackson gets injured again, he may never see his position as a starter. C.J. is starting to see the game at speed now and with his talent, he can do great things with the Bills.