Mullen was selected in the seventh round of the 1980 NHL Entry Draft by the Winnipeg Jets.
 Two years later, he signed with the Jets and scored an impressive 24 goals and recorded 50 points during his rookie season.
 He spent five seasons with Winnipeg before joining his hometown New York Rangers where he spent four seasons.
Mullen also represented the United States in the 1989 and 1991 Ice Hockey World Championship tournaments after the Rangers were knocked out in the first round of the Stanley Cup playoffs (he was also a member of the 1984 Canada Cup team).
Mullen spent the 1991–1992 season with the Sharks and the following season with the Islanders.

On August 9, 1993, Mullen suffered a small stroke caused by a blood clot in his brain.
 The stroke severely impacted his motor skills and he required open heart surgery.
 Mullen was recovering well and his reflexes largely returned to normal.
 He hoped to one day return to action in the NHL but a subsequent seizure in 1994 ended his dreams of a comeback and he was forced to retire from hockey.
Mullen was selected in the seventh round of the 1980 NHL Entry Draft by the Winnipeg Jets.  Two years later, he signed with the Jets and scored an impressive 24 goals and recorded 50 points during his rookie season.  He spent five seasons with Winnipeg before joining his hometown New York Rangers where he spent four seasons. Mullen also represented the United States in the 1989 and 1991 Ice Hockey World Championship tournaments after the Rangers were knocked out in the first round of the Stanley Cup playoffs (he was also a member of the 1984 Canada Cup team). Mullen spent the 1991–1992 season with the Sharks and the following season with the Islanders.
On August 9, 1993, Mullen suffered a small stroke caused by a blood clot in his brain.  The stroke severely impacted his motor skills and he required open heart surgery.  Mullen was recovering well and his reflexes largely returned to normal.  He hoped to one day return to action in the NHL but a subsequent seizure in 1994 ended his dreams of a comeback and he was forced to retire from hockey.
Brian Mullen