The Treble is a term in association football that refers to a club winning their country's top tier league, primary domestic cup and continental level cup competition in the same season. In general, these may be referred to as the European Treble (often referred to as The Treble) - for a UEFA confederation team winning their domestic league, primary domestic cup and European Cup (UEFA Champions League since 1992) in the same season, the Continental Treble - the equivalent of the European Treble for a different confederation and often over a calendar year and the Domestic Treble - consisting of domestic league and two domestic cup wins.
It should be noted that it is possible to win more than three top tier trophies in a single season - in most countries, the maximum possible is four or The Quadruple. This has been achieved only once - by Celtic in 1967, and is considered a superior achievement to The Treble.
A distinct Treble is the International Treble, consisting of major international level continental cup (for UEFA, the European Championships), the FIFA World Cup and the Confederations Cup. It differs from other trebles in that it is impossible to win in a single season or calendar year; a nation achieving the International treble is considered to be the holder of all three trophies at the same time.
It is possible, notably in Europe due to the presence of the lower level UEFA Cup (and formerly, the UEFA Cup Winners' Cup) and two domestic cup competitions in some countries (in England, the FA Cup and League Cup), to win three other trophies in a single season. This has led to a large amount of controversy, particularly in English football with regards to the use of the term 'The Treble' or 'Treble' as a proper noun. The naming controversy has primarily arisen due to the rivalry between Manchester United FC, winners of the European Treble in 1999, and Liverpool FC winners of UEFA Cup, FA Cup and Football League Cup in 2001, described by fans and club as 'The Treble'[1] despite the relative lower standard of the League Cup and UEFA Cup. This has led to opposing fans (and later some Liverpool fans, in criticism of former manager Gerard Houllier[2]) to dub the combination as the Mickey Mouse Treble.
In general, a consensus view within English football is that winning three trophies in a season is sometimes referred to as a treble or treble as a common noun, with The Treble or Treble as a proper noun referring to the more prestigious European Treble, or in some cases the Continental, Domestic and International Treble variants.
The most high profile type of treble is the European Treble called simply The Treble. It consists of a club winning their country's top tier league, the country's major domestic cup competition, and the continental championship, the European Cup/Champions League, all within a single season.
Only four teams have achieved this rare distinction:
Continental trebles have the same definition as the European Treble but are for teams from other continents. While perhaps not as prestigious as the European Treble, they are sometimes harder to accomplish as some continental championships run during a calendar year while domestic play runs an autumn-to-spring season, or vice versa. To date, no treble has been won by a South American or Oceania club. South American countries, with the exception of Brazil, have no domestic cup. From 2001 onwards, due to the busy schedule in the first semester in Brazil, teams playing in the Copa Libertadores have not been allowed to participate in the Copa do Brasil in the same year.
This type of treble consists of a club winning their country's top tier league as well as the two most highly regarded domestic cup competitions, all during one season.
¹ - The League of Ireland Shield was the forerunner to the FAI League Cup.
² - Sun Hei's treble was part of a domestic quadruple. That season they also won the Hong Kong League Cup.
The International Treble
This section lists National Teams who have been holders of three trophies at the same time. These Trebles are impossible to achieve in a single season, and generally consist of a team's continental championship, the World Cup and the Confederations Cup.
A career treble can be used to refer to a player or manager having achieved a Treble - winning the national trophies and continental cup making up a Continental Treble or The Treble in their career rather than a single season, either at club level or as an International Treble. Notably, Johan Cruyff has achieved a career treble at club level as both a player for AFC Ajax - consisting of the Eredivisie, KNVB Cup and European Cup, and manager of FC Barcelona winning the Copa del Rey, La Liga and European Cup
Other
It is possible in many countries to win three other trophies in a single season, or in a calendar year. These are generally not referred to in the same manner as any of The Treble variants, consisting of a trophy or trophies not considered the top tier competition domestically or on a continental level. Most commonly, the three consist of a domestic cup, a second domestic cup or league title and the UEFA Cup although examples exist for other confederations.
In general, any 3 trophy combination that is not the European Treble, International Treble, Continental Treble or Domestic Treble should be called 'a treble' or 'treble' using a common noun; it should not be referred as such where the term may be confused with 'The Treble' or 'Treble'.
Notable examples of clubs winning three trophies in a season include:
IFK Göteborg - The 1982 team won the Swedish Championship, Svenska Cupen and the UEFA Cup. They also won the domestic league, Allsvenskan, which at the time did not decide the Swedish champions, but only decided which eight teams that would play the play-off for the championship. Note: the UEFA Cup and the Svenska Cupen were played in 1981-1982 (autumn-spring); the Allsvenskan and the Swedish Championship were played in 1982 (spring-autumn).
CF Pachuca - The 2007 team won the Copa Sudamericana, the CONCACAF Champions' Cup and the Mexican Clausura. They also finished the Mexican League in first place but in Mexico there is no trophy for such achievement. In winning both the Copa Sudamericana and the Champions Cup, they have become one of the only teams in the world to have ever won a continental trophy from more than one continent. In addition, the club won the 2007 Superliga in August 2007 which along with the CONCACAF Champions' Cup and the Mexican Clausura would be considered a calendar year treble.
Near Trebles
There have been several instances of teams narrowly missing out on The Treble, either having lost a top tier domestic or continental cup final or missed out on the domestic league title. Some of the more notable occurrences include,
near European Treble:
Real Madrid - The 1958 team won La Liga, and the European Cup, but lost the Copa del Rey Final 2-0 to Athletic Bilbao.
Internazionale - The 1965 side won the Italian League and the European Cup, but were beaten 1-0 by Juventus in the Coppa Italia final.
Bayern Munich - The 1999 team won the Bundesliga, but finished runner-up in the German Cup and Champions League. Having secured the league title, Bayern lost the 1999 UEFA Champions League Final to Manchester United, who ironically, by beating Bayern, completed their own treble. Bayern subsequently went on to lose the Cup final against Werder Bremen. Bayern also won the German League Cup in 1999.
Manchester United - The 1994 team lost 3-1 to Aston Villa in the League Cup final and won the English Premier League and the FA Cup
Chelsea - The 2007 team coached by José Mourinho won the FA Cup and the League Cup but missed out on a Domestic treble by finishing second in the Premier League.
In addition, there have been other instances whereby a club narrowly missed out on winning three trophies in a season:
Juventus - The 1995 team won the Serie A and the Italian Cup, but lost to Parma F.C. in the Uefa Cup final.
In 1973 has won the league and finished runner-up in the Italian Cup final and the European Cup final.
In 1983 finished in the 2nd place in the Serie A, has won the Italian Cup and finished runner-up in the European Cup final.
So named after Bayer Leverkusen's 2001-02 season, the term is reserved for a side that completes a 'runners-up' Treble - being losing finalists in the UEFA Champions League, primary domestic cup and runners-up in the domestic league[3].
So far, the 'Treble Horror' has only occurred once - to Bayer Leverkusen in 2002. In the German Bundesliga the team surrendered a five point lead at the top of the table over the last three games of the season to finish second behind Borussia Dortmund, lost the Champions League final 2-1 to Real Madrid, and lost the German domestic cup final 4-2 to Schalke 04.