Career
He has also served as an assistant coach with both professional and United States. national teams. In 1980, Haas began his professional career with the Dallas Tornado of the North American Soccer League. That fall, he moved to the Denver Avalanche of the Major Indoor Soccer League for two season.
He later played for the Colorado Comets of the USISL. In 1990, he both played for and served as an assistant coach with the Colorado Foxes of the American Professional Soccer League.
Following his retirement from playing, Haas has coached at the youth level and served as an assistant coach with several United States. national youth teams.