The 1972–73 NHL season was the 56th season of the National Hockey League. Sixteen teams each played 78 games. Two new teams, the New York Islanders and the Atlanta Flames, made their debuts. The Montreal Canadiens won the Stanley Cup by beating the Chicago Black Hawks four games to two in the Stanley Cup Finals.

Pre-season

Flames

Bruins

Sabres

Golden Seals

Black Hawks

Red Wings

Kings

North Stars

Canadiens

Islanders

Rangers

Flyers

Penguins

Blues

Maple Leafs

Canucks

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East Division West Division

Prior to the start of the season, the 1972 Summit Series took place. It was the first ever meeting between Soviet Union and NHL calibre Canadian ice hockey players. Canada expected to easily beat the Soviets, but were shocked to find themselves with a losing record of one win, two losses, and a tie after four games in Canada. In game four, which Canada lost 5–3, Vancouver fans echoed the rest of Canada's thoughts of Team Canada's poor performance by booing them off the ice. The final four games were played in the Soviet Union. Canada lost game five, but won the last three for a final record of four wins, three losses, and a tie.

For the first time since the collapse of the Western Hockey League in 1926, the National Hockey League had serious competition. A new professional hockey league, the World Hockey Association, made its season debut with 12 new teams, half of which were based in cities with existing NHL teams. Unlike the Western Hockey League, though, the new World Hockey Association would not challenge for the Stanley Cup. In response to the new league, the NHL hastily added two new teams in an unplanned expansion, the New York Islanders and Atlanta Flames, in an attempt to exclude the WHA from newly constructed arenas in those markets.

In February 1972, the Miami Screaming Eagles of the WHA signed Bernie Parent to a contract,^[1] and when Bobby Hull was signed on June 27, 1972, to play with the Winnipeg Jets, the Chicago Black Hawks sued, claiming a violation of the reserve clause in NHL contracts. Others soon followed Hull to the WHA, including, J. C. Tremblay, Ted Green, Gerry Cheevers and Johnny McKenzie. In the expansion draft, the New York Islanders and Atlanta Flames made their picks and eleven Islander players skipped off to the WHA. The California Golden Seals, chafing under the unorthodox ownership of the unpopular Charlie Finley, were also a victim of the WHA, losing eight key players.

Teams

Regular season

The Montreal Canadiens took over first place in the East Division and the league from the Boston Bruins while for the third consecutive season the Chicago Black Hawks dominated the West Division.

Final standings

Playoffs

No teams in the playoffs swept their opponents, the last time this would happen until 1991, and no series went to a seventh game, the last time this has happened to date. In addition, the Chicago Black Hawks reached the Stanley Cup Finals without a captain, the last time this would happen until 2014.

Playoff bracket

Quarterfinals

(E1) Montreal Canadiens vs. (E4) Buffalo Sabres

The Montreal Canadiens finished first in the league with 120 points. The Buffalo Sabres finished fourth with 88 points. This was the first playoff meeting between these two teams. This was the Buffalo Sabres' first playoff appearance in their third season since entering the league in the 1970–71 NHL season. Montreal won the five-game regular season series earning six of ten points.