Great Moments In Hockey History: Lanny's Leafs Upset Isles

April 29, 1978: Toronto's Lanny McDonald scores at 4:13 of overtime to give the Maple Leafs a 2-1 win over the New York Islanders in Game 7 of their Stanley Cup quarterfinal series.

The Leafs upset an Islanders powerhouse that had finished the regular season third in the overall standings with 111 points.