Career
North American Soccer League, Major Indoor Soccer League and American Professional Soccer League. He also coached in the National Professional Soccer League. In 1981, he played for the Washington Diplomats of the North American Soccer League.
In February 1982, he signed with the Baltimore Blast of the Major Indoor Soccer League.
He would go on to play three seasons with the Blast and was inducted into the team"s hall of fame in 2007. In November 1985, the Blast sold Wirtz" contract to the Chicago Sting for $5,000.
He retired in 1988. In 1989, he played for the amateur Chicago Schwaben.
In 1990, he signed with the Orlando Lions of the American Professional Soccer League. In the fall of 1990, he was hired to coach the Illinois Thunder of the National Professional Soccer League.
He lasted only three games before resigning with the Thunder at 1–2.
