Slap fighting is a one-on-one competition in which opponents strike each other in the face until someone submits or is knocked out. Although competitors have held unregulated matches in small venues for years, the contests received a major stamp of approval in October when the Nevada Athletic Commission sanctioned it as a sport.

Slap fighting got even more exposure earlier this year when Warner Bros. Discovery cable station TBS began televising matches on a show called "Power Slap." Nevada athletic officials have also approved UFC President Dana White as lead promoter for the Power Slap League, which launched in January.