Every shape the Stanley Cup playoffs have taken since the NHL's first season in 1917-18, and the four springs that broke the pattern. Each was checked against two independent publishers on 2026-09-11, listed at the bottom. Where a detail only had one reading it was left out rather than guessed, and where the two accounts disagree the disagreement is printed.
Seasons
Field
Qualifying
1917-18 to 1925-26
2 of 4
The NHL played off for its own title, usually two clubs in a two game total goals series (a best of seven in 1918-19, and none at all in 1919-20 when Ottawa won both halves of the schedule), and the winner then met the champion of the Pacific Coast Hockey Association (later the western leagues generally) in the Stanley Cup Final.
1926-27 to 1937-38
6 of 10
Ten clubs in a Canadian and an American division, five each; the top three in each division qualified.
1938-39 to 1941-42
6 of 7
With the Maroons gone the two divisions were folded into one table of seven, and six of the seven made the playoffs.
1942-43 to 1966-67
4 of 6
Six clubs, and only the top four qualified: first played third and second played fourth in best of seven semifinals, then a best of seven Final.
1967-68 to 1973-74
8 of 12
The league doubled to twelve in one summer, split into an East division of the six old clubs and a West division of the six new ones, and the top four in each division qualified, every series best of seven.
1974-75 to 1978-79
12 of 18
Eighteen clubs in two conferences of two divisions; the top three in each division qualified, twelve in all.
1979-80 to 1980-81
16 of 21
The WHA merger took the league to twenty one clubs and the field grew to sixteen, seeded one to sixteen by record regardless of division or conference.
1981-82 to 1992-93
16 of 21
Realigned into the Wales and Campbell conferences, each of two divisions (Adams, Patrick, Norris, Smythe), with the top four in every division qualifying and the first two rounds played entirely inside the division.
1993-94 to 2012-13
16 of 26
The conferences became Eastern and Western, and the top eight in each conference qualified and were seeded one to eight, the division winners taking the top seeds and one playing eight, two playing seven and so on.
2013-14 onward
16 of 30
Two conferences of two divisions again (Atlantic, Metropolitan, Central, Pacific): the top three in each division qualify, then the two best remaining records in each conference come in as wild cards, sixteen in all.
The field column counts the clubs in the NHL's own playoff against the clubs in the league, both in the first season of each row; the league kept growing inside most of them.
The NHL played off for its own title, usually two clubs in a two game total goals series (a best of seven in 1918-19, and none at all in 1919-20 when Ottawa won both halves of the schedule), and the winner then met the champion of the Pacific Coast Hockey Association (later the western leagues generally) in the Stanley Cup Final.
Ten clubs in a Canadian and an American division, five each; the top three in each division qualified.
With the Maroons gone the two divisions were folded into one table of seven, and six of the seven made the playoffs.
Six clubs, and only the top four qualified: first played third and second played fourth in best of seven semifinals, then a best of seven Final.
The league doubled to twelve in one summer, split into an East division of the six old clubs and a West division of the six new ones, and the top four in each division qualified, every series best of seven.
Eighteen clubs in two conferences of two divisions; the top three in each division qualified, twelve in all.
The WHA merger took the league to twenty one clubs and the field grew to sixteen, seeded one to sixteen by record regardless of division or conference.
Realigned into the Wales and Campbell conferences, each of two divisions (Adams, Patrick, Norris, Smythe), with the top four in every division qualifying and the first two rounds played entirely inside the division.
The conferences became Eastern and Western, and the top eight in each conference qualified and were seeded one to eight, the division winners taking the top seeds and one playing eight, two playing seven and so on.
Two conferences of two divisions again (Atlantic, Metropolitan, Central, Pacific): the top three in each division qualify, then the two best remaining records in each conference come in as wild cards, sixteen in all.
The 1919 Stanley Cup Final between the Montreal Canadiens and the Seattle Metropolitans was cancelled after five games because of the influenza epidemic, and no champion was named. It stayed the only blank on the trophy for the next 86 years.
The whole 2004-05 season was cancelled on 16 February 2005 over the collective bargaining dispute, the first time a North American major league lost a full season to a labour fight. No playoffs were played and the Cup went unawarded for the first time since 1919.
The 2019-20 season was paused in March 2020 with games unplayed, and the league came back in August with a one off 24 club tournament, the top twelve in each conference by points percentage. The top four in each conference played a round robin for seeding while seeds five to twelve played best of five qualifying series; the survivors formed a normal sixteen club bracket of best of seven series, the whole thing played in two hub arenas, Toronto for the East and Edmonton for the West and then for the last two rounds.
With pandemic travel rules still in force the league played a 56 game season in four one year divisions (the seven Canadian clubs together in the North) and no conferences at all. The top four in each division qualified, the first two rounds stayed inside the division, and the four division champions were reseeded by points for the semifinals, so the Final could pair any two of them. Sixteen clubs, every round best of seven, and the usual shape came back the following season.
The real format from 2013-14 onward and nothing else: the top three in each of the four divisions plus two wild cards per conference, the division winner with the better record drawing the lower wild card, the first two rounds inside the division, then a conference final and the Stanley Cup Final, every series best of seven. Front Office runs the modern league on real 2026-27 rosters rather than a chosen era, so there is no older bracket to compare it against.
Sixteen, and it has been sixteen since 1979-80 apart from the 24 club return to play in 2020. Since 2013-14 they are the top three in each of the four divisions plus the two best remaining records in each conference as wild cards.
The name arrived with the 2013-14 realignment, but the idea is older: from 1977-78 the last four playoff places went to the best remaining records regardless of division, and from 1979-80 to 1980-81 the whole field of sixteen was ranked by record with no regard to divisions at all.
Because the league went back to a shape it had already used. From 1981-82 to 1992-93 the top four in each division played each other in the first two rounds, which is where a lot of the famous rivalries were built. The 1993-94 change to conference wide seeding, one through eight, lasted twenty seasons, and the 2013-14 format brought the divisional rounds back with wild cards attached.
Different reasons, same result. The 1919 Final between Montreal and Seattle was cancelled after five games because of the influenza epidemic. The whole 2004-05 season was lost to a lockout, so there were no playoffs to award it from. The Record Books leave both years empty rather than filling them.
Once by design. When the league dropped to six clubs in 1942-43, the six qualifiers out of seven became four out of six. Every change since has either kept the field or grown it, and it settled at sixteen in 1979-80.
Every change above rests on at least two independent publishers agreeing: Wikipedia's season pages cross-checked against the NHL's own playoff format history, the "History of Stanley Cup Playoff Formats" section of the league's 2025 playoffs information guide, with Sports Illustrated, the Hockey Hall of Fame, three NHL.com news pages and the league's playoff format page behind individual rows. Hockey Reference, Britannica and Last Word on Sports all refused the fetch, and two NHL.com history addresses came back empty or missing, so none of those is cited. 34 sources across 4 publishers, last checked 2026-09-11.
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