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.
Eliteserien (men's handball) Eliteserien is the premier professional men's handball league in Norway. It was established in 1966, and it is currently contested by twelve teams. Sandefjord TIF is the championship's most successful team with seven titles, followed by Oppsal IF with six. The former sponsor of the league was Grundig, hence the former name "GRUNDIGligaen".