Taveras, Catricala, Odor, Guzman, not sure any of these guys qualify as sleepers no one's heard of. Taveras and Catricala because they had breakout 2011 seasons and Odor and Guzman because the big-bonus international signings always get a lot of attention. Guzman got like $4 million; people have heard of him.
You want some deep, deep, deep sleepers?
Jonathan Garcia (LAD - OF)
Jose Rafael DePaula (NYY - RHP)
Dae-Eun Rhee (ChC - RHP)
Kyle Crick (SF - RHP)
Tommy La Stella (Atl - 2B)
Dillon Maples (ChC - RHP)
Roberto Osuna (Tor - RHP)