Background
Zylker grew up in San Francisco, California.
Zylker grew up in San Francisco, California.
He graduated from South San Francisco High School before attending San Jose State University where he played three seasons (1971-1973) on the men’s soccer team
He was a 1972 second team All American and holds the school’s single season assists record. He was inducted into the SJSU Athletic Hall of Fame in 2004. In 1971, he joined the United States. Olympic soccer team as it prepared for the 1972 Olympics.
He played the final United States. group game, a 7-0 loss to West Germany.
In 1975, he returned to the Olympic team as it failed to qualify for the 1976 Summer Olympics. He played seven games in total with the United States. Olympic team
In 1975, he signed with the San Jose Earthquakes of the North American Soccer League. He played fifteen games that season.
He began the 1976 season in San Jose before being traded to the San Antonio Thunder mid way through the season.
He has coached the Cañada College women's soccer team
He was also a member of the United States. soccer team at the 1972 Summer Olympics.