Goaltender Don Keenan played one game for the Toronto Maple Leafs.
Keenan, a former goalie with St. Michael's famed junior team, was a practicing goaltender at the University of Toronto in the late 1950s. He was also the Leaf's "house goalie" at the time, as it was still not common to have back up goalies. In case either the Leafs or their opponents found themselves without a goaltender for all or part of game, Keenan would come out of the stands and put on his pads.
That is exactly what happened on March 7th, 1959. Harry Lumley of the visiting Boston Bruins was too sick from suspected food poisoning to play against the Leafs that night. The 21 year old Keenan took to the nets, and played admirably. He stopped 37 of 41 shots in a 4-1 loss to the Leafs. For his efforts Keenan was even recognized as the third star of the game.
But hockey was not in Don Keenan's future. He continued studying mechanical engineering at the University of Toronto and went on to become president and CEO of Trane Canada.