|A native of New York, NY, Mullen played 17 seasons in the NHL with the St. Louis Blues, Calgary Flames, Penguins and Boston Bruins (1979-80, 1981-82 through 1996-97), recording 502 goals and 561 assists for 1,063 points and 241 penalty minutes in 1,062 regular season games. His 502 goals are second all-time among U.S.-born players. He was a member of three Stanley Cup Championship teams, with Calgary in 1989 and Pittsburgh in 1991 and 1992. A three-time NHL All-Star, Mullen twice won the Lady Byng Trophy as “the player adjudged to have exhibited the best type of sportsmanship and gentlemanly conduct combined with a high standard of playing ability” (1987 and 1989). He was named to the NHL First All-Star Team following the 1988-89 season, after setting career highs for goals (51), assists (59) and points (110) in a season, while leading the league in plus/minus with a plus-51 rating.|
In 1995, Mullen received the Lester Patrick Trophy for outstanding service to hockey in the United States." Mullen became the first American-born player to record 1,000 points when he picked up an assist on February 7, 1995, and became the first American to reach the 500-goal plateau on March 14, 1997. He was inducted into the Hockey Hall of Fame in his first year of eligibility in 2000, two years after his induction into the United States Hockey Hall of Fame in 1998.