The Oklahoma Thunder are a minor league American football team based in Tulsa, Oklahoma. Starting with the 2011 season, the team competes in the Gridiron Developmental Football League, playing in the Midwest-North Division in the GDFL's Impact Conference. Players include Bacone College alumni, former major college standouts, and former NFL players including Willie Ponder. The team was founded by James "Sonny" Ashford in 2007 and the team's name pre-dates the relocation of the Seattle Supersonics to Oklahoma City to become the Oklahoma City Thunder. The team's official colors are silver and blue. The team's cheerleaders are known as the Thunder Cats.