Relative age effects in American professional football

Heneghan Jack F. () and Herron Michael C. ()
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Heneghan Jack F.: Dartmouth College, 6108 Silsby Hall, Hanover, NH 03755-3547, USA
Herron Michael C.: Program in Quantitative Social Science, Dartmouth College, 6108 Silsby Hall, Hanover, NH 03755-3547, USA

Journal of Quantitative Analysis in Sports, 2019, vol. 15, issue 3, 185-202

Abstract: We test for the existence of relative age effects in professional American football. In a sample of 18,898 football players born on or after 1940, there is an excess of January and February births – consistent with a relative age effect associated with calendar year – as well as a slight increase in September births – consistent with the fact that some football players we analyze attended high school in states with fall school cutoff dates. We consider the possibility that relative age effects may affect skilled football positions more than positions relying heavily on player weight, and we find suggestive evidence of this. Lastly, and contrary to what has recently been shown in professional hockey, we find no evidence that misguided preferences for relatively older players lead to selection-based inefficiencies in football player drafting. Our results have implications for evaluating potential football players and speak broadly to the role of physiological factors beyond player control on athletic success.

Keywords: football; performance; relative age; selection (search for similar items in EconPapers)
Date: 2019
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DOI: 10.1515/jqas-2018-0030

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