Here's the book that ESPN Sportzone's Rob Neyer called "the best book of its kind." Updated for the 2001 season, the BASEBALL PROSPECTUS analyzes every top player in each organization all the way down to rookie ball, with objective, intelligent commentary and irreverent humor. The PROSPECTUS gives the final word on what the players did, why they did it, and what they're going to do in the future.
Baseball Prospectus is an organization that publishes a website, BaseballProspectus.com, devoted to the sabermetric analysis of baseball. BP has a staff of regular columnists and provides advanced statistics as well as player and team performance projections on the site.
Since 1996 the BP staff has also published a Baseball Prospectus annual as well as several other books devoted to baseball analysis and history.
I had forgotten how mean they used to be in the player comments, but damn: the team chapters were really great work. It's funny to read this book knowing how the following years played out for each organization and specific players. It's especially neat to read about future Hall of Famers in the earliest part of their career.