Specifically, to what extent to do park factors affect the usefulness of various ERA estimators? It...
Specifically, to what extent to do park factors affect the usefulness of various ERA estimators? It seems reasonable to assume that while much of what happens when a ball is put in play is not controlled by a pitcher. However, given that some extreme parks are likely to exercise their own environmental force over the outcome of batted balls it stands to reason that ERA estimators that factor in a pitcher’s batted ball profile may do a better job in certain types of parks than others.
Park Factors and ERA Estimators: Part I | FanGraphs Baseball Bill's debut over at FG. Great work and can't wait to see more.