Riggs was also an assistant coach on national championship winning teams at the Sioux Falls Cougars.
[2] Riggs played college football for the University of Sioux Falls where he led the Cougars to win the schools first NAIA National Championship in 1996.
He was selected to the All-American team and led the nation with 55 touchdown passes that season.
In 1998, Riggs signed and played professionally in Europe for the La Courneuve Flash in France Championnat Élite Division 1.
He also played for the Sioux Falls Storm in the Indoor Football League in 2000–2001, before taking over as head coach in 2002.