Many sports fanatics like to think they know everything about baseball. Think again.

Fangraphs.com provided Jeff Passen of Yahoo! sports with plenty of baseball material he didn't know. Passen fancies himself as a baseball fanatic, but even he was amazed at some of the raw baseball data he came across. As a result, he made an educational list of 25 things.

Click here to read the 25 things you didn't know about baseball.