The Baseball Analysts
baseballanalysts.com
Rich Lederer and Bryan Smith contribute daily to this part-blog, part-science project, keeping you up to date with the days statistics of interest.
The Hardball Times
hardballtimes.com
This baseball digest gives daily doses of analytical observations from the game of baseball.
High Boskage House Baseball Analysis Web Site
highboskage.com
Statistics are updated daily. Comparisons by position, league, and historical data. Articles on theory and physics can also be found here.
Baseball Graphs
baseballgraphs.com
Gain clearer intuition about baseball by using innovative ways to visualize baseball statistics.
Tango On Baseball
tangotiger.net
A collection of various research about linear weights, runs, and wins.
Original Baseball Research
mysite.verizon.net
Personal site of Clifford Blau, who has made his sabermetric studies on such topics as Bill Mazeroski's fielding, the effects of artificial turf, and park factors available.
Red Sox Stats
redsoxstats.com
Calculations for the Red Sox organization. Also statistics for all MLB players.
SportMetrika, Inc.
sportmetrika.com
The corporate website for a team of consultants to sports organizations.
Society for American Baseball Research (SABR) UK
sabruk.org
An archive of research articles and illustrations and information on how to join the UK chapter of SABR.
Society for American Baseball Research (SABR)
sabr.org
Research information, SABR on-line bookstore, on-line membership application, bulletin board comments page, and baseball links.
Voros' Baseball Analysis
baseballthinkfactory.org
Contains many archived sabermetric studies, including seminal work on defense-independent pitching statistics.
RIOT -- Major League Baseball Playoff Races
riot.ieor.berkeley.edu
UC-Berkeley's Industrial Engineering and Operations Research department has created their own daily calculation metric for analyzing team record performance based on historical data. Results include the number of wins needed to date to guarantee a first-place division finish or playoff run, as well as to avoid elimination from first or the playoffs. Calculations provided thanks to the research of Professor Dorit S. Hochbaum.
Baseball Prospectus Online
baseballprospectus.com
In-depth columns, prospect interviews, transaction analysis, and player cards containing Baseball Prospectus's Davenport Translations. Metrics for evaluating hitters, starters, and relievers updated daily; four to ten columns presented free of charge on the site per week.
The Baseball Think Factory
baseballthinkfactory.org
The baseball braintrust gets together to create this site. Player comparisons, and statistical information kept current. Articles from the baseball minds are thorough and informative.
SABR/Bob Davids Chapter
sabrdc.org
Regional SABR chapter covering major and minor league baseball teams in the Mid-Atlantic area.