he won the Monster Factory Heavyweight Championship. On September 15, 2015, it was announced that Riddle had signed with the World Wrestling Network (WWN) to work the October Evolve events. Riddle later confirmed that he had taken part in a WWE tryout, which led to them setting up the booking with Evolve. On January 24, 2016, Riddle won Evolve's Style Battle tournament. On April 8, it was reported that Riddle had signed a contract with Evolve's parent company WWN. On September 3, Riddle made his debut for Pro Wrestling Guerrilla (PWG), entering the 2016 Battle of Los Angeles tournament, from which he was eliminated in his first round match by Kyle O'Reilly. In October 2016, Riddle took on Cody Rhodes at New York promotion House of Glory's show titled Unbreakable in a losing effort. On January 15, 2017, Riddle defeated Rampage Brown to win the Progress Atlas Championship. Riddle debuted for Revolution Pro Wrestling on January 21, unsuccessfully challenging Katsuyori Shibata for the British Heavyweight Championship. On February 11 at CZW 18, Riddle faced David Starr in an inter-promotional champion vs champion match, with Riddle defending Progress Wrestling's Atlas Championship and Starr defending wXw's Shotgun Championship. The match ended in a double disqualification, and neither championship changed hands. On April 1, Riddle defeated five other men to become the inaugural WWN Champion. On August 5 Riddle won The Scenic City Invitational Tournament. On October 20, Riddle and Jeff Cobb, known collectively as "The Chosen Bros", defeated the Lucha Brothers (Rey Fenix and Penta el Zero M) for the PWG World Tag Team Championship. They retained the titles until April 20, 2018, when they lost them against The Rascalz (Zachary Wentz and Dezmond Xavier). On April 5, 2018, Riddle defeated Zack Sabre Jr. at Evolve 102 to win the Evolve Championship. On August 4, Riddle lost the Evolve Championship to Shane Strickland at Evolve 108. WWE Early years in NXT (2018–2020) On July 31, 2018, it was reported by Uproxx that Riddle had signed a contract with WWE. On August 18, Riddle appeared at NXT TakeOver: Brooklyn IV and was identified by the event's commentators as WWE's newest signing. Riddle's NXT debut was on the October 31 edition when he successfully defeated Luke Menzies. On November 17, 2018, on the pre-show of NXT TakeOver: WarGames II, Kassius Ohno interrupted a Riddle interview. When the show started, Riddle challenged Ohno to a