Lester Patrick was managing the New York Rangers of the National Hockey League in 1934 when his assistants convinced him to sign Lynn to a contract. Lester was hesitant, fearing that such a move would be labeled as nepotism. Nonetheless, the Rangers signed Lynn to a contract on November 4, 1934. He made his NHL debut on November 10, 1934, against the St. Louis Eagles. Lynn struggled in his rookie season of 1934–35, resulting in the criticism Lester feared. Lynn was often maligned by fans and the press, but was a steady presence for the Rangers over the next several seasons as he scored between 25 and 34 points in 48-game seasons between 1935–36 and 1939–40. His brother Muzz joined the team in 1938, and the pair were members of New York's 1940 Stanley Cup championship team. Playing on a line by Bryan Hextall and Phil Watson, Patrick developed into a leading offensive player for the Rangers. He recorded 44 points in 1940–41, then led the NHL with 32 goals in 1941–42. He was named to the NHL's first All-Star Team, and to the second team in 1942–43. That season, Patrick set a career high with 61 points. Patrick then left the NHL for two years to serve with the United States military in the Second World War. He returned to the league for one final NHL season in 1945–46, but found that he lost his skating speed during his time off and switched from left wing to defence. It was his final season in the NHL. In 455 games over ten seasons, Patrick scored 145 goals and 335 points.
Coaching career
The Rangers named Patrick the head coach of their American Hockey League affiliate, the New Haven Ramblers for the 1946–47 season. He was also listed as a utility player for the team, but hoped he would play only if necessary. Nonetheless, he appeared in 16 games for the Ramblers; he recorded two goals and six assists. He remained with New Haven for the following two seasons, and was promoted to head coach of the Rangers midway through the 1948–49 NHL season. He served as Rangers coach until 1950 before moving on to coach the Boston Bruins between 1950 and 1955. He was also named the team's general manager in 1954, a position he held until 1964. Patrick had three short stints as head coach of the St. Louis Blues and two as general manager. He was as the first general manager and head coach of the Blues in 1967–68, but quickly surrendered the coaching role to Scotty Bowman, who led the team to an appearance in the 1968 Stanley Cup Finals. He ultimately became the Blues' senior vice president, a position he held until his retirement in 1977.
Personal life
Patrick married Dorothea Davis, a model and actress, in 1939. He and Dorothea had one son, Lester Lee Patrick. Lynn Patrick died on January 26, 1980. He left a Blues game that night due to illness but crashed his car near the arena after suffering a heart attack. Lynn was a member of one of hockey's most famous families. His father Lester and uncle Frank were both inducted into the Hockey Hall of Fame. His brother Muzz was an NHL player, as were his sons Craig and Glenn. Lynn was posthumously inducted into the Hall of Fame in 1980, months after his death. Craig became the fourth member of the Patrick family so honoured in 2001. USA Hockey recognized Lynn's contributions to hockey in the United States by naming him a recipient of the Lester Patrick Trophy in 1989.