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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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.

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WPA in Wins and Losses

August 21, 2006

One of the theories of win-based stats going around is that only contributions in wins should count toward a player’s wins, and vice versa for losses. Andy takes a look at WPA in Yankee wins and losses in his most recent Yankee WPA Rundown blog and finds some interesting things.

For instance, Mariano Rivera would rack it up in that sort of system, because he mostly enters games when the Yankees are ahead. The other interesting finding is that Derek Jeter stands out as someone who contributes a lot in both Yankee wins and losses. Fun stuff.

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