Originally Posted by 757690
As stated before, nothing he does, he does by himself. Not even strikeouts, walks, nor home runs. The greatest lie of the sabermetric crowd, "xFIP measures what a pitcher can control while ERA doesn't."
Irony of using "lie" to describe what is essentially a strawman argument aside, the pitcher is mostly in control of what happens between the ball leaving his hand and the ball reaching the catcher's mitt or the bat. Someone and sometimes multiple someones are mostly in control of what happens between the bat hitting the ball and finding a glove, ground or fan's hand/beer cup.
It has been shown that FIP, xFIP, SIERA, tERA, et al. are much better at measuring talent and predicting future ERA than ERA is. They are especially useful when looking at 1-3 season-sized samples.
Perfect? No. Better than ERA at predicting the future and estimating talent: yes.
Let's not let perfect be the enemy of good and because of that, resort to using not-so-good until perfect comes along.