How many league titles has the Norwegian professional football club for which Jan Christiansen played in Trondheim won?
Rosenborg BK Rosenborg Ballklub, commonly referred to simply as Rosenborg (] ) or (especially locally) RBK, is a Norwegian professional football club from Trondheim that plays in the Eliteserien.The club have won a record 24 league titles, eleven Norwegian Football Cup titles and have played more UEFA matches than any other Norwegian team. RBK play their home games at the all-seater Lerkendal Stadion which has a capacity of 21,400. Kåre Ingebrigtsen was appointed head coach in July 2014.
NTNUI Norges Teknisk-naturvitenskapelige Universitets Idrettsforening, NTNUI, is the largest sports club in Norway with more than 10,000 members and a variety of participators on all levels of skills in more than 50 different sports. The athletic association is formally connected to the Norwegian University of Science and Technology located in Trondheim. The club has facilities at Dragvoll, Gløshaugen, Moholt and Solsiden.