The Extreme Football League (X League) was announced in December 2019, as a successor to the Legends Football League (LFL).[1] The announcement included the Thunder,[1] a successor to the LFL's Seattle Mist. The X League's 2020 season was postponed, and the league also did not operate during 2021, amid the COVID-19 pandemic.
The Thunder first competed during the 2022 X League season, defeating the Denver Rush and losing to the Chicago Blitz during the regular season. The Thunder advanced to the X League's postseason, where they again faced Chicago and lost by a single point, 34–33, ending their season.[2][3]