hoya1982 wrote:I think the multiple for ERA is right, but I don't think the multiple for WHIP works like that. I saw some column about this, and while the ERA changed a lot, the WHIP didn't. I don't know why, I think it may have something to do with more intentional walks in the NL.
You pitch around hitters in the NL a lot more giving up unintentional intentional walks. I still think you generally see a .05-.10 whip change and a .30 to .80 ERA change depending on the pitcher and the parks etc.