Electing to pursue an NHL career, Lumley eventually played parts of nine seasons with the Canadiens, Edmonton Oilers and Hartford Whalers, winning the Stanley Cup on two occasions 1984 and 1985 with the Edmonton Oilers.
Lumley decided to play in the NHL, playing parts of nine seasons with the Canadiens, Edmonton Oilers, and Hartford Whalers. He won the Stanley Cup twice—once in 1984 and once more in 1985—with the Edmonton Oilers.