Baseball Nation

I came across this very cool map of MLB teams' fan bases. It seems to be a product of Nike, meaning it could be entirely made up or it could be based on sales of Nike merchandise.



It got me to thinking that this is something I would like to see studied scientifically. It shouldn't be too hard: Call random phone numbers, have the person on the other end state his or her favorite MLB team and his or her ZIP code, and compile the data into a map. Then I discovered that someone is doing pretty much just that, via the Internets. If you contribute, make sure you click on "Yes, I'm a sports fan" after entering your geographic data.