Sleepers

Pro Fantasy Baseball - Free 2012 Fantasy Baseball Draft Report. Free Player Rankings, mock draft, Sleepers, Breakouts & printable position-by-position Cheat Sheets.
Fantsay Alarm - Fantasy baseball sleepers. Win Your Fantasy Baseball League, 2012 Mock Draft & more.
Fantasy Baseball Cafe - List of sleepers for the 2012 fantasy baseball season.
Roto Wire - A pay service that will give you the top-ten fantasy baseball prospects in major league baseball for free
Fantasy Baseball Search Breakouts - A breakout player is a player who is well known, but are expected to out-perform his average projections for 2012 or their numbers from last year and the past. A breakout player can be a stud coming off a bad season or a well known young player ready to emerge as a stud.
Baseball America - Puts out and annual list of the top 100 prospects in minor league baseball. Some may become fantasy stars of the near future.
Fantasy Baseball Search Rookies - List of the top 25 rookies ranked on their talent and fantasy impact in 2012. Keep checking out this list by Junkyard Jake, we will be adding profiles to each rookie throughout the preseason

 

Sleepers

The Scouting Book - Top 100+ Prospects in baseball. Filter by position or organization. Updated often during the offseason & updated daily during the pre-season to show the latest situations and adjusted for spring results. Very useful for fantasy draft purposes.
Fantasy Scope - Projections for 2012 using system that takes minor league statistics at the Triple-A or Double-A level and regresses them to give a pretty conservative prediction for the following season.
Fantasy Baseball Search Sleepers - Our definition of a "sleeper " is a player who will perform well beyond his expectations or seasons he has played in the past. A sleeper can be a rookie, life long minor-leaguer, or a veteran. The difference between a sleeper and a breakout player, normally the sleeper is not a stud and hasn't had a huge season yet in his career. The breakout player has had big years, but could be in a slump or coming off a terrible year.