 He also spent the 2003 and 2004 seasons with the Sioux Falls Spitfire of the USL Premier Development League.Pederson signed with the Minnesota Thunder of the USL First Division in 2007, and spent the next two seasons playing with the team, but only made one first team appearance, clocking just 18 minutes of field time.In 2009 Pederson signed with Minnesota's development team, Rochester Thunder, in their inaugural campaign in the USL Premier Development League.