Principles
In this section, you will find articles detailing many of the most important sabermetric principles. Some of these articles were written by Graham MacAree over at Lookout Landing. Graham has graciously allowed these articles to be re-posted here on the Library, which I hope will make his writing even more accessible and wide-spread.
Please give Graham some props; his work is an invaluable resource.
Piper was the editor-in-chief of DRaysBay and the keeper of the FanGraphs Library.