About.com, Baseball
Learn all about the national pastime. Read all about the rules, the leagues, the teams, the players, the history and the games that are followed by millions of fans around the globe.
http://baseball.about.com/

Baseball-Reference.com
Up-to-date Major League Statistics for each player, team, and league in baseball history. Includes batting, pitching and fielding stats along with leaders, managers, links, books and award winners.
http://www.baseball-reference.com/