Tournaments consisting of iterative matches are a common mechanism for determining how to allocate a prize. While participants are focused on their own outcomes, tournament organizers often have objectives such as maximizing the total investment or effort by the participants over the course of...

Many economic, political and social environments can be described as contests in which agents exert costly efforts while competing over the distribution of a scarce resource. These environments have been studied using Tullock contests, all-pay auctions and rank-order tournaments. This survey...