Ryerson played four seasons of collegiate soccer while attending the University of Nevada, Las Vegas (UNLV).
After leaving UNLV, Ryerson played the 1986 season with the San Diego Nomads of the Western Soccer Alliance.
[1] In June 1986, the San Diego Sockers selected Ryerson in the first round of the Major Indoor Soccer League draft.
In the fall of 1988, Ryerson signed with the Fort Wayne Flames of the American Indoor Soccer Association under coach and former Blast teammate Dave MacKenzie.
Ryerson appeared in the final 26 games of the season, scored 6 goals and added 5 assists for 11 points.
In 1992, he played 1 game for a total of 6 minutes with the Tampa Bay Rowdies in the American Professional Soccer League.
In 1988, he played his only full international match with the United States men's national soccer team.
[12] He led the Bombers to the championship game, losing to the Lafayette Swampcats, and earning Coach of the Year honors.