nflWAR: a reproducible method for offensive player evaluation in football

Unlike other major professional sports, American football lacks comprehensive statistical ratings for player evaluation that are both reproducible and easily interpretable in terms of game outcomes. Existing methods for player evaluation in football …


Along with Maksim Horowitz and Sam Ventura, I have developed the nflscrapR package in R which allows for easy access of publicly available NFL play-by-play data. We provide estimates for the expected points and win probability for every play based on our fully reproducible methodology explained in our paper available for free on ArXiv. The nflscrapR package is frequently used by the football analytics community appearing in articles on The Athletic and FiveThirtyEight, as well as shared by the NFL Director of Data and Analytics.