Effectively Wild Episode 1865: Slide Rule
Effectively Wild: A FanGraphs Baseball Podcast
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The Infections of Baseball, You Know?
Baseball players used to have to touch the base, but now they don't. It's called a diamond because it has four bases and is conventionally depicted with sides along the top and bottom. The boston version of pre modern baseball played in philadelphia had stakes instead of actual bases. So that could be why it's called a Diamond.
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