UEFA coefficient in the context of "Weighted arithmetic mean"

The UEFA Champions League (UCL), usually known simply as the Champions League, is an annual club association football competition organised by the Union of European Football Associations (UEFA) that is contested by top-division European clubs. The competition begins with a round robin league phase to qualify for the double-legged knockout rounds, and a single-leg final. It is the most-watched club competition in the world and the third most-watched football competition overall, behind only the FIFA World Cup and the UEFA European Championship. It is one of the most prestigious football tournaments in the world and the most prestigious club competition in European football, played by the national league champions (and, for some nations, one or more runners-up) of their national associations.

Introduced in 1955 as the European Champion Clubs' Cup (French: Coupe des Clubs Champions Européens), and commonly known as the European Cup, it was initially a straight knockout tournament open only to the champions of Europe's domestic leagues, with its winner reckoned as the European club champion. The competition took on its current name in 1992, adding a round-robin group stage in 1991 and allowing multiple entrants from certain countries since the 1997–98 season. While only the winners of many of Europe's national leagues can enter the competition, the top 5 leagues by coefficient provide four teams each by default, with a possibility for additional spots based on performance during the previous season. Clubs that finish below the qualifying spots are eligible for the second-tier UEFA Europa League competition, and since 2021, for the third-tier UEFA Conference League.

The Süper Lig (Turkish pronunciation: [ˈsypæɾ liɟ], Super League), also known as Trendyol Süper Lig for sponsorship reasons, is a professional association football league in Turkey and the highest level of the Turkish football league system. Eighteen teams compete, where a champion is decided and three clubs are promoted from, and another three relegated to the 1. Lig. The season runs from August to May, with each club playing 34 matches. Matches are played Friday through Monday.

Run by the Turkish Football Federation, the league succeeded the Turkish Football Championship and the National Division, both being former top-level national competitions. The Süper Lig is currently 9th in the UEFA coefficient ranking of leagues based on club performances in European competitions over the last five years. A total of 75 clubs have competed in the Süper Lig, but only 6 have won the title to date: Galatasaray (25), Fenerbahçe (19), Beşiktaş (16), Trabzonspor (7), Başakşehir (1) and Bursaspor (1).

Juventus Football Club (/juːˈvɛntəs/ yoo-VEN-təs; Italian: [juˈvɛntus]; from iuventūs, Latin for 'youth'), commonly known as Juventus or colloquially as Juve (Italian: [ˈjuːve]), is an Italian professional football club based in Turin, Piedmont, who compete in Serie A, the top tier of the Italian football league system. Founded in 1897 by a group of Turinese students, the club played in different grounds around the city, and has played in the Juventus Stadium since 2011.

Nicknamed la Vecchia Signora ("the Old Lady"), it has won 36 official league titles, 15 Coppa Italia trophies and nine Italian Super Cups, being the record holder for all these competitions; they also hold two Intercontinental Cups, two European Cup / UEFA Champions Leagues, one European Cup Winners' Cup, three UEFA Cups (Italian record), two UEFA Super Cups and one UEFA Intertoto Cup (Italian record). Consequently, the side leads the historical Federazione Italiana Giuoco Calcio (FIGC) classification, whilst on the international stage the club occupies the sixth position in Europe and the twelfth in the world for most confederation titles won with eleven trophies, as well as the fourth in the all-time Union of European Football Associations (UEFA) competitions ranking, having obtained the highest coefficient score during seven seasons since its introduction in 1979, the most for an Italian team in both cases and joint second overall in the last cited.

Galatasaray Spor Kulübü (Turkish pronunciation: [galataˈsaɾaj spoɾ kuˈlyby], Galatasaray Sports Club), usually referred to as Galatasaray, is a Turkish professional football club based in the district of Sarıyer, in the European side of Istanbul. It is the association football branch of the larger Galatasaray Sports Club of the same name, itself a part of the Galatasaray Community Cooperation Committee which includes Galatasaray High School where the football club was founded in 1905, consisting entirely of students. The team plays in dark shades of red and yellow at home, with the shirts split down the middle between the two colours.

Galatasaray is one of three teams to have participated in all seasons of the Süper Lig since 1959, following the dissolution of the Istanbul Football League. Galatasaray has the most Süper Lig (25), Turkish Cup (19) and Turkish Super Cup (17) titles in Turkey. Galatasaray is the most successful Turkish club in European competitions. Galatasaray won the UEFA Cup and UEFA Super Cup in 2000, becoming the only Turkish team to win a major UEFA competition. In the 1999–2000 season, the club achieved the rare feat of completing a treble by winning the Süper Lig, Turkish Cup, and UEFA Cup in a single season. In the UEFA Champions League, Galatasaray has reached the quarter-finals several times and the semi-finals of Club Champions Cup once. Galatasaray is the only Turkish club to have been ranked first on the IFFHS World Rankings. According to IFFHS, Galatasaray is the best Turkish club of the 20th century, and the 20th most successful club in Europe. As of 2025, they have the 2nd position in UEFA coefficient among Turkish teams.

The Eredivisie (Dutch pronunciation: [ˈeːrədiˌvizi]; "Honour Division" or "Premier Division"), also known as VriendenLoterij Eredivisie for sponsorship reasons, is a professional association football league in the Netherlands and the highest level of the Dutch football league system. The league was founded in 1956, two years after the start of professional football in the Netherlands. As of the 2024–25 season, it is ranked the sixth-best league in Europe by UEFA.

The Eredivisie consists of 18 clubs. Each club meets every other club twice during the season, once at home and once away. At the end of each season, the two clubs at the bottom are relegated to the second level of the Dutch league system, the Eerste Divisie (First Division), while the champion and runner-up of the Eerste Divisie are automatically promoted to the Eredivisie. The club finishing third from the bottom of the Eredivisie goes to separate promotion/relegation play-offs with six high-placed clubs from the Eerste Divisie.