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Two-Stage Asymmetric Tullock Contests with Cost Shifters and Endogenous Continuation Decision

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  • Felix Reichel

Abstract

This paper introduces a contest-theoretic simplified model of triathlon as a sequential two-stage game. In Stage 1 (post-swim), participants decide whether to continue or withdraw from the contest, thereby generating an endogenous participation decision. In Stage 2 (bike-run), competition is represented as a Tullock contest in which swim drafting acts as a multiplicative shifter of quadratic effort costs. Closed-form equilibrium strategies are derived in the two-player case, and existence, uniqueness, and comparative statics are shown in the asymmetric n-player case. The continuation decision yields athlete-specific cutoff rules in swim drafting intensity and induces subgame-perfect equilibria (SPEs) with endogenous participation sets. The analysis relates swim drafting benefits, exposure, and group size to heterogeneous effective cost parameters and equilibrium efforts.

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  • Felix Reichel, 2025. "Two-Stage Asymmetric Tullock Contests with Cost Shifters and Endogenous Continuation Decision," Papers 2510.00349, arXiv.org.
    • Handle: RePEc:arx:papers:2510.00349
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