The 1980 Stanley Cup Finals was the championship series of the National Hockey League's (NHL) 1979–80 season, and the culmination of the 1980 Stanley Cup playoffs. It was contested by the New York Islanders in their first-ever Finals appearance and the Philadelphia Flyers, in their fourth Finals appearance, and first since 1976. The Islanders would win the best-of-seven series, four games to two, to win their first Stanley Cup championship and the third for a post-1967 expansion team after Philadelphia's Cup wins in 1974 and 1975. Paths to the Finals New York defeated the Los Angeles Kings 3–1, the Boston Bruins 4–1 and the Buffalo Sabres 4–2 to advance to the Final. Philadelphia defeated the Edmonton Oilers 3–0, the New York Rangers 4–1 and the Minnesota North Stars 4–1 to make it to the Final. Game summaries In game one, Denis Potvin scored the first power-play overtime goal in Stanley Cup Final history. In game six, Bob Nystrom scored the Cup winner in overtime, his fourth career overtime goal, at the time putting him alone behind Maurice Richard's six on the all-time overtime goal-scoring list. Ken Morrow joined the team after winning the Olympic gold medal and added the Stanley Cup to cap a remarkable season. The deciding game six was marred by one of the most infamous blown official calls in NHL playoff history. With the game tied 1–1, the Islanders Butch Goring picked up a drop pass from New York left wing Clark Gillies which had clearly gone back over the Flyers' defensive zone blue line into center ice. Linesman Leon Stickle waved the play as on-side, and Goring threaded a pass to right wing Duane Sutter who beat Philadelphia goalie Pete Peeters for a 2-1 New York lead. The Flyers argued vehemently to no avail. Everyone on both sides except Goring and Sutter appeared to relax as if play had been blown dead once the puck went over the blue line. Flyers captain Mel Bridgman stated the play changed the momentum of the game at a critical time even though the Flyers scored shortly afterwards to tie the score 2-2. Stickle admitted after the game that he had blown the call. Ultimately, it was the Flyers lack of discipline and the resulting Islander Power Play goals that were the difference in the series. The series-winning overtime goal in game six was scored by Bobby Nystrom and assisted