Challengers
Challengers are opponents who contest the authority, title, or position held by others. In sports and competitive contexts, a challenger seeks to defeat the reigning champion or holder of a title. The relationship is central to many formats, including boxing, wrestling, chess, and tennis. In professional tennis, the ATP Challenger Tour and the WTA Challenger Tour form a tier below the main tours, providing opportunities to gain ranking points and qualify for higher-level events. In chess, the challenger competes against the reigning World Champion in a title match, with contenders selected through cycles such as the Candidates Tournament.
In politics, a challenger runs against an incumbent officeholder in elections and may offer an alternative
The precise meaning of the term is context-dependent, varying by field and rules. Across domains, challengers