There is not a more overused word in fantasy football than "sleeper."
The classic fantasy sleeper—the player who comes from nowhere to explode into prominence—is more myth than reality. Most of the popular sleeper picks are mentioned so often that they can't be called "sleepers."
Still, production relative to cost means more to a fantasy owner than just the production itself. If you can get fourth-round value from a seventh-round pick, that's good. If you can get it from a 14th-round pick—well, those are the sorts of selections that win leagues.
We're looking for players drafted as backups who can become fantasy starters.