Fun With Sabermetrics - Day 3 - Inherited Runs

So this one started out as a Fun With Sabermetrics that would pertain to the mystical world of relief pitchers, but somewhere during my research it became more interesting to document just how bad pre-2010 C.J. Wilson was.

So let's first start out by explaining the sabermetric stat for the day, it's easy enough to understand, and it's pretty much the stat by which all relief pitchers are going to be measured in the future. IR, or Inherited Runners, is the number of runners on the bases when a given pitcher enters the game in relief. IS, or Inherited Score, is the number of these runners that score on the given relief pitcher. IS%, therefore, is the percentage of Inherited Runs who subsequently scored. Because, as you know, these runs wouldn't count against this pitcher's ERA, this stat is needed to have some semblance of an idea of how well relief pitchers do when they come into a game with men on.

And boy. Between the 2006 to 2008 seasons, Ceej Wilson was just bad.