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. The 1972 NHL Expansion Draft was held on June 6 to fill the rosters of the two new teams.
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.
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.
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
Semifinals
Stanley Cup Finals
E1
Montreal
4
E4
Buffalo
2
E1
Montreal
4
W2
Philadelphia
1
W2
Philadelphia
4
W3
Minnesota
2
E1
Montreal
4
W1
Chicago
2
W1
Chicago
4
W4
St. Louis
1
W1
Chicago
4
E3
NY Rangers
1
E2
Boston
1
E3
NY Rangers
4
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.
The Boston Bruins finished second in the East Division with 107 points. The New York Rangers finished third in the East Division with 102 points. This was the ninth playoff meeting between these two teams with Boston winning six of the eight previous series. They last met in the previous year's Stanley Cup Finals which Boston won in six games. The teams split this year's six-game regular season series.
The Chicago Black Hawks finished first in the West Division with 93 points. The St. Louis Blues finished fourth in the West Division with 76 points. This was the first playoff meeting between these two teams. The teams split this year's six-game regular season series.
(W2) Philadelphia Flyers vs. (W3) Minnesota North Stars
The Philadelphia Flyers and Minnesota North Stars finished tied for second in the West Division each with 85 points (Philadelphia won the tiebreaker in season series 3–2). This was the first playoff meeting between these two teams. Philadelphia won three of the five games in this year's regular season series.
(W1) Chicago Black Hawks vs. (E3) New York Rangers
This was the fifth playoff meeting between these two teams with Chicago winning three of the four previous series. They last met in the previous year's Stanley Cup Semifinals which New York won in a four-game sweep. The teams split this year's five-game regular season series.
It was the 16th playoff meeting between these two teams. Montreal lead 10–5 in their previous meetings. This was a rematch of the 1971 Stanley Cup Finals, which Montreal won in seven games. Chicago won three of the five games in this year's regular season series.
The following is a list of players of note who played their first NHL game in 1972–73 (listed with their first team, asterisk(*) marks debut in playoffs):
NOTE: Plante, Stapleton, Backstrom, Howell and Balon would finish their major professional careers in the World Hockey Association.
Broadcasting
Hockey Night in Canada on CBC Television televised Saturday night regular season games and Stanley Cup playoff games. HNIC also produced Wednesday night regular season game telecasts for CTV.
This was the first season under the U.S. rights agreement with NBC, airing weekend afternoon regular season games and playoff games.
Dryden, Steve, ed. (2000). Century of hockey. Toronto, ON: McClelland & Stewart Ltd. ISBN0-7710-4179-9.
Fischler, Stan; Fischler, Shirley; Hughes, Morgan; Romain, Joseph; Duplacey, James (2003). The Hockey Chronicle: Year-by-Year History of the National Hockey League. Lincolnwood, Illinois: Publications International Inc. ISBN0-7853-9624-1.