How many league titles has the Norwegian professional football club for which Jan Christiansen played in Trondheim won?
Jan Christiansen Jan Clifford Christiansen (born 8 April 1941) is a Norwegian former football player and coach. He played for Rosenborg BK in Trondheim from 1966 to 1975, earning three league titles and one cup championship. Christiansen was capped 13 times for Norway national football team. Christiansen coached Rosenborg BK in the 1975 season.
Jan Kristian Fjærestad Jan Kristian Fjærestad (born 4 September 1963) is a retired Norwegian football striker. He played for Moss F.K., and became the Norwegian Premier League's top goalscorer with 18 goals in 1987, the season Moss won the league title.