Career
Dahlén was drafted 7th overall by the New York Rangers in the 1985 National Hockey League Entry Draft. He played 966 career National Hockey League games, scoring 301 goals, 354 assists and 655 points. During his active playing career, he played for 14 seasons, between 1987-1988 and 2002-2003, in the National Hockey League for the New York Rangers, Minnesota North Stars, Dallas Stars, San Jose Sharks, Chicago Blackhawks and Washington Capitals.
On April 15th, 1993, Dahlén scored the final goal in Minnesota North Stars history in a 5-3 loss to the Detroit Red Wings, Russian Courtnall and Dave Gagner assisted on the goal.
After his playing career, he has served as an assistant coach for the Swedish national team and a pro scout for the Dallas Stars. And in June 2006, he was hired as an assistant coach by the Stars.
Following the 2007-2008 season, Dahlén left Dallas to take the head coaching position for Frölunda The Human Context in Elitserien in Sweden. After three seasons with Frölunda, Dahlén signed as head coach for HV71, where he played for two seasons in the late 1990s.