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Match-Rigging in Professional Sumo: Elucidation of Incentive Structures and Empirical Analysis

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Author Info

  • Hori, Masahiro
  • Iwamoto, Koichiro

Abstract

This paper first develops a simple model to show that incentives for match-rigging in professional sumo differ depending on the rank to which a wrestler belongs. While incentives for match-rigging can arise for wrestlers in the top divisions (sekitori), few incentives arise for wrestlers-in-training (makushita and below). We then report the results of our empirical analysis, which show that match-rigging in the top divisions has declined in the post-Duggan and Levitt (2002) period, and that at the wrestler-in-training level there was no statistically detectable match-rigging during any period. We find further that match-rigging in professional sumo has stabilized at statistically undetectable levels following the mobile phone text message match-rigging scandal, and that on average the wrestlers selected for sanctions following the scandal were in fact those most involved in match-rigging.

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File URL: http://hermes-ir.lib.hit-u.ac.jp/rs/bitstream/10086/25431/1/DP580.pdf
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Bibliographic Info

Paper provided by Center for Intergenerational Studies, Institute of Economic Research, Hitotsubashi University in its series CIS Discussion paper series with number 580.

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Length: 23 p.
Date of creation: Jan 2013
Date of revision:
Handle: RePEc:hit:cisdps:580

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Related research

Keywords: Sumo wrestling; match rigging; incentive scheme;

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References

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  1. Helmut M. Dietl & Markus Lang & Stephan Werner, 2010. "Corruption in Professional Sumo: An Update on the Study of Duggan and Levitt," Journal of Sports Economics, , vol. 11(4), pages 383-396, August.
  2. Miceli, Thomas J., 1997. "Economics of the Law: Torts, Contracts, Property, Litigation," OUP Catalogue, Oxford University Press, number 9780195103908.
  3. Hori, Masahiro & Iwamoto, Koichiro, 2013. "Match-Rigging in Professional Sumo: Elucidation of Incentive Structures and Empirical Analysis," CIS Discussion paper series 580, Center for Intergenerational Studies, Institute of Economic Research, Hitotsubashi University.
  4. Mark Duggan & Steven D. Levitt, 2000. "Winning Isn't Everything: Corruption in Sumo Wrestling," NBER Working Papers 7798, National Bureau of Economic Research, Inc.
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Cited by:
  1. Hori, Masahiro & Iwamoto, Koichiro, 2013. "Match-Rigging in Professional Sumo: Elucidation of Incentive Structures and Empirical Analysis," CIS Discussion paper series 580, Center for Intergenerational Studies, Institute of Economic Research, Hitotsubashi University.
  2. Hori, Masahiro & Iwamoto, Koichiro, 2013. "Are yokozuna sacred? : Further evidence on match-rigging in sumo wrestling," CIS Discussion paper series 609, Center for Intergenerational Studies, Institute of Economic Research, Hitotsubashi University.

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