I initially created Baseball Graphs to develop new and better ways of presenting baseball statistics. The 2003 season was my first full-season attempt, and it turned out pretty well. I now spend a lot of my time creating and formatting the baseball stats at The Hardball Times.

Along the way, I've also picked up the writing bug. I spend most of my energy writing for THT, but sometimes I like to write about more geeky stuff, baseball research and things like that. That's what this blog is for.

I'm very interested in graphics and other information display, so I'll probably post links to creative stuff like that. I also plan to write historical articles that complement the historical graphs. And I have inexplicably developed an interest in baseball win-related stats, such as Bill James's Win Shares and something called Win Probability Added. So you can expect a few posts about that stuff too.

If you're interested, I've created a complex spreadsheet full of WPA logic, which you can download at ftp.baseballgraphs.com/wpa. If you'd like to read more about Win Shares, try these links:

Win Shares Intro
What They're Good For
Mathematical Details

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January, 2007
December, 2006
November, 2006
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October, 2005
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July, 2004
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February, 2004
January, 2004
December, 2003
November, 2003
October, 2003

To view a list of all articles, click here.

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If there is any aspect of WPA, Win Shares or baseball graphics you're interested in, drop me an e-mail and I'll look into it.

Syndicate Baseball Graphs:

WPA 1.4

May 01, 2005

I’ve uploaded another version of the WPA spreadsheet. I haven’t fully tested it, but it seems to be working pretty well.

The features of this version are:

- Adds an “order” number to each play in the Log sheet, making sorting easier.
- Also adds the Date to each play in the Log sheet. This will enable you to copy and paste together multiple game files easily, because each play will have a date associated with it.
- Adds a new stat I’ve created called “Volatility.” Volatility is the difference in WP between a home run and strikeout in the particular at bat. It basically is a measure of the “drama” inherent in the situation. The potential values run from 0 to 1.
- Hopefully clarified the Directions by expanding them and moving them to a separate sheet.

Please download it and let me know if you find any bugs or whatnot.

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