After two season back home in Adelaide, Smyth had a falling out with 36ers coach Mike Dunlap who had a reputation for favouring the younger players. During 1994 Dunlap had even begun to start 3rd year player Brett Maher as the 36ers point guard and playing Smyth from the bench despite Smyth still being the starting point guard for the Australian Boomers (when Smyth questioned Dunlap on why he was benched, Dunlap told him that it was simply because he was old). This saw Smyth sign for the NBL's highest profile club, the Sydney Kings for the 1995 season where he linked with his former Canberra championship winning coach Bob Turner. In an injury interrupted season, Smyth played just 16 games for the Kings, who didn't make the playoffs. He retired from playing professional basketball after his season with the Kings.