While previous studies have focused on the value of the endorsement contracts at the moment they are signed, the performance during the contract has drawn limited attention, and the few studies focusing on this period have produced inconclusive results. To fill this gap, we hypothesize that the tournament type and the athlete’s level of sports elitism can influence this “sport results-business performance” relationship. The inclusion of the tournament type fills a gap in the literature as most studies have examined the potential effects of endorsement strategies without observing the different levels of tournaments within a particular sport. Guided by brand equity theory and equity theory, we argue that while a greater prize won corresponds to higher stock returns, there is a certain point of “sports elitism” on part of the athlete, after which a greater prize leads to lower stock returns. Empirical results from tennis tournaments support these arguments.