 In Lillehammer, he is known as "Læfsa".Tollefsen played with Lillehammer Ishockeyklubb for two seasons, spending most of that time on the senior team, instead of any of the club's two junior teams where a player his age should have spent that stage of their career.During the 2001–02 season, he was a regular in the team's starting lineup as they reached fourth place in the Norwegian Elite League, and reached the playoff semi-finals for a bronze medal.