Samuel Ratsch, better known by his ring name Darby Allin, is an American professional wrestler signed to All Elite Wrestling (AEW) since 2019, where he is a one-time AEW World Champion, two-time AEW TNT Champion, and one-time AEW World Tag Team Champion alongside Sting. Allin debuted in 2015 for World Class Revolution (WCR) before competing for Evolve, Game Changer Wrestling (GCW), the World Wrestling Network (WWN), and many other independent promotions.