WastinSomeTime
Well-Known Member
There is an article at FanDuel showing the results of a study done on pitcherswho pitched in both the AL and NL in the same year between 2000 and 2010 and it showed about what I had thought. Pitchers shaved .45 runs from their ERA when pitching in the NL versus the AL. So a pitcher having an ERA of 3.55 in the NL could reasonably be expected to have an ERA of 4.00 in the AL.
https://www.fanduel.com/insider/2011/08/02/the-impact-of-switching-leagues-for-pitchers/
In line with what Will stated in that he could produce a 4.00 ERA.