Pitcher usage evolution

In October of 2017 Bill Deane noted in his blog

https://dizzydeane.wordpress.com/2017/10/17/the-declining-influence-of-good-pitchers/ that more innings are shifting from teams’ best pitchers to their worst.

 

Bill checked 1962, 1999, 2017. I thought that I’d take a look at other seasons. This should be visible in this PDF:  pitchersinningdistribution

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