Sunter was one of the first generation of kicking specialists in the CFL. In the East in the early 1970, he was part of a quartet of new plackickers that include Don Sweet in Montreal, Gerry Organ in Ottawa and Zenon Andrusyshyn in Toronto. Sunter finished second in scoring in his first two seasons (1972 and 1973) with Hamilton before capturing the East scoring title with 141 points in 1974. Sunter fell to third in scoring in the East in 1976, but still had a pretty good year with 109 points and 65.1% success rate on his fieldgolas which was just a shade behind the 66.0% success rate of the year before. Sunter then sat out the 1976 and 1977 seasons before getting the call from Toronto to resume his career in 1978 as Zenon Andrusyshyn was off to try his luck in the NFL. 1978 was a bit rocky for Sunter as his fieldgoal percentage dropped to 48.5%, but he bounced back in 1979 with a 98 point season and a 65.6% success rate. That, however was Sunter's last yar in the CFL as Zenon Andrusyshyn had returned to the CFL in 1979 with Sunter's old team in Hamilton, and in 1980, the Big Z returned to Toronto and displaced Sunter. Sunter won an East All-Star in 1979 as a punter.