Point Shaving in the NBA: An Economic Analysis of the National Basketball Association's Point Spread Betting Market

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Abstract/Contents

Abstract
In this paper, I examine the point spread betting market of the National Basketball Association for indications of cheating through point shaving. Previous studies have illustrated the contradictory phenomenon of simple, profitable betting rules persisting in a market of informed traders. While normally dismissed due to the salaries earned by professional players, I propose point shaving as an explanation for this persistent market inefficiency. Through analysis of the distribution and symmetry of the forecast errors, I arrive at a rough approximation of point shaving’s prevalence. In studying in–game scores, I find conclusive evidence that the point spread influences game outcomes and has causative effects on the probability of the favored team covering the point spread. The key economic concept these results support is that with the non–linear payout structure of the point spread betting market creating a discontinuity over the value of final game margins, individuals are altering their behavior in response to these distorted incentives.

Description

Type of resource text
Date created May 2007

Creators/Contributors

Author Gibbs, Jonathan
Primary advisor Noll, Roger
Degree granting institution Stanford University, Department of Economics

Subjects

Subject Stanford Department of Economics
Subject sports betting
Subject gambling market
Subject NBA
Subject sports book
Subject efficient markets
Subject wager
Genre Thesis

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User agrees that, where applicable, content will not be used to identify or to otherwise infringe the privacy or confidentiality rights of individuals. Content distributed via the Stanford Digital Repository may be subject to additional license and use restrictions applied by the depositor.

Preferred citation

Preferred Citation
Gibbs, Jonathan. (2007). Point Shaving in the NBA: An Economic Analysis of the National Basketball Association's Point Spread Betting Market. Stanford Digital Repository. Available at: https://purl.stanford.edu/nh108vv2047

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Stanford University, Department of Economics, Honors Theses

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