Baseball-Reference.com WAR Explained - Baseball-Reference.com

As many have noticed, we have not been updating the 2012 WAR data in-season. The reason for this is that we have been working on a major upgrade to our WAR framework. The link above gives a very detailed rundown including: how to compute each part of our WAR formula, our reasoning on making the changes, downloads for historical WAR data, charts of the various constants and factors we use, and a chart of differences between the new B-R WAR, the old B-R WAR and FanGraphs WAR.

2012 Box Scores and Play by Play - Baseball-Reference.com

Just a reminder that you can access this season's boxscores in calendar form using the 2012 boxscores page.

2012 Minor League Baseball League Encyclopedia - Baseball-Reference.com.

Just a reminder that the minor leagues got underway yesterday as well. Linked is our 2012 Minor League directory. Enjoy.

2011 Major League Baseball Opening Day Rosters - Baseball-Reference.com.

Linked is 2011, but if you change the year this is now available for every year back to 1918. It is linked from the main league-year pages under the Other tab.

This goes along with our Team Opening Day Histories.

Baseball Player Twitter Accounts - Baseball-Reference.com

Thanks to everyone who helped us catalog 350 player twitter accounts. The work will continue, so if we are missing someone please let us know and we'll get it updated.

We gave this to people as a promotion at the SABR Analytics Convention, and now we're offering it to you -- a free Play Index trial subscription that works through April 15! Just visit http://bbref.com/pi/subscribe.cgi to create an account, and enter the coupon code "Analytics" to redeem the free trial.

As you're doing that, also check out this list of 34 example Play Index searches, the types of queries you can run yourself using the trial subscription:

Major League 2011 Batting Splits - Baseball-Reference.com.

This was suggested at the SABR analytics conference and since I was rebuilding the db, I decided to add it. It appears just below the outs page on all of the pitcher, batter, team and league splits. I've linked to the 2011 MLB overall splits above. Split suggestions are always welcomed.

1918 Box Scores and Play by Play - Baseball-Reference.com

Thanks to the good folks at RetroSheet we have added 1918 box scores, splits, and game logs to the site.

Here is Walter Johnson's dominant 1918 season in gamelog form.

We are still in the process of updating the splits and the Play Index with 1918 data, but that should happen later today, Murphy willing.

Due to a combination of poor planning on my end and some snafus with data we are provided with, Baseball-Reference will begin updating daily with the Marlins/Cardinals tilt on April 4th.

Updating the site for a new season is always a harrowing experience given the multitude of interconnected moving parts. We are continually simplifying the process, but between the SABR Conference two weeks ago, the NLB launch, a couple of new servers we have coming online and my dawdling we aren't going to be ready to update the Mariners and A's games this week. I apologize to our users who want to see that data ASAP, but we'll make sure we are ready to go next week.

Thank you for your patience.

Negro League Stats: 1903-1948

We are very pleased and honored to announce that we have added Negro League Statistics from 1903 through 1948. These stats are due to a pair of collaborations. The first is between Baseball-Reference.com and the National Baseball Hall of Fame and Museum (1920-1948 data), and the second is between B-R and Gary Ashwill and Scott Simkus of Outsider Baseball (1903-1919 data).

The details of what is and is not included is understandably complicated and the list of contributors very long, so we have provided a detailed rundown of the stats and the people who researched them.

Special thanks also to Ted Turocy who helped immensely with the integration of the stats into our existing databases.