Despite winning the Canadian Major Junior Hockey League Goaltender of the Year and being on the CMJHL First All-Star Team in 1967, Brown went undrafted coming out of junior. He signed a free agent contract with the Dallas Black Hawks of the CHL, the Chicago Black Hawks minor league affiliate. He played one game with Chicago, where he was behind Tony Esposito and Gerry Desjardins on the depth chart, and this was his only time game in the National Hockey League. Otherwise Brown played with Dallas until 1972.