In December 1987, Ryerson signed with the Maryland Bays of the American Soccer League. He was a 1988 ASL All Star and a member of the 1990 APSL championship Bays. 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 switched teams to the Maryland Bays in December 1987, a move that led to his selection as an ASL All Star in 1988 and membership on the APSL champion Bays team in 1990. He then joined the Fort Wayne Flames of the American Indoor Soccer Association under coach Dave MacKenzie.