Date of this Version
Journal of Quantitative Analysis in Sports
Within sports analytics, there is substantial interest in comprehensive statistics intended to capture overall player performance. In baseball, one such measure is Wins Above Replacement (WAR), which aggregates the contributions of a player in each facet of the game: hitting, pitching, baserunning, and fielding. However, current versions of WAR depend upon proprietary data, ad hoc methodology, and opaque calculations. We propose a competitive aggregate measure, openW AR, that is based on public data, a methodology with greater rigor and transparency, and a principled standard for the nebulous concept of a “replacement” player. Finally, we use simulation-based techniques to provide interval estimates for our openW AR measure that are easily portable to other domains.
baseball, statistical modeling, simulation, R, reproducibility
Baumer, B. S., Jensen, S. T., & Matthews, G. J. (2015). OpenWAR: An Open Source System for Evaluating Overall Player Performance in Major League Baseball. Journal of Quantitative Analysis in Sports, 11 (2), 1-27. http://dx.doi.org/10.1515/jqas-2014-0098
Date Posted: 27 November 2017
This document has been peer reviewed.