The CONCACAF Champions League, known officially as the Scotiabank CONCACAF Champions League for sponsorship reasons, is an annual continental club football competition organized by CONCACAF. The tournament currently uses a knockout format; it had a group stage prior to the 2018 competition. Unlike its European and South American counterparts, the winner of the CONCACAF Champions League does not automatically qualify for the following season’s competition.
Before Concacaf's official founding on September 18, 1961, in Mexico City, following the merger of the Central American and Caribbean Football Confederation (CCCF) and the North American Football Confederation (NAFC), there was already a club tournament. This competition invited national champions to participate between 1959 and 1961.
In 1959, the inaugural edition featured four teams: CD Olimpia (Honduras), CD Guadalajara (Mexico), LD Alajuelense (Costa Rica), and CD FAS (El Salvador). The tournament followed a round-robin format with home-and-away matches. CD Olimpia emerged victorious, finishing ahead of CD Guadalajara thanks to a superior goal difference (+2).
For the second edition in 1961, Jong Holland from the Netherlands Antilles (now Curaçao) joined the competition. Only LD Alajuelense and CD Olimpia returned from the first tournament, while newcomers included CD Águila (El Salvador) and Comunicaciones FC (Guatemala). Unlike the 1959 all-play-all format, the 1961 tournament was divided into regional groups, culminating in LD Alajuelense defeating Jong Colombia in the final with a resounding 7-1 aggregate score.
The CONCACAF Champions League was founded in 1962, 60 years ago. The tournament has been rebranded in 2008. When it was first organized in 1962, the competition was called the CONCACAF Champions Cup. The title has been won by 28 clubs, 13 of which have won the title more than once. Mexican clubs have accumulated the highest number of victories, with 36 titles in total. The second most successful league has been Costa Rica’s Primera División, with six titles in total. Mexican side Club América are the most successful club in the competition’s history, with seven titles, followed by fellow Mexican side Cruz Azul with six titles. The most successful non-Mexican club is Saprissa of Costa Rica, with three titles. The only four teams to successfully defend the trophy are all Mexican: América, Cruz Azul, Pachuca and Monterrey.
The tournament employs a 16-team knockout format and is played between February and May. Ten teams qualify automatically based on domestic performance, along with the top six teams (champion, runner-up, two losing semi-finalists, and two best losing quarter-finalists) of the CONCACAF League, played at the end of the previous calendar year. Each round of competition consists of a two-leg home-and-away series with the winner determined by aggregate goals over both legs. If aggregate goals are equal, the away goals rule is applied. If away goals are also equal, the game is decided by an immediate penalty shoot-out; there are no overtime periods.
Source Information: https://www.sportmonks.com/football-api/concacaf-champions-league-api/
Source Information: https://www.concacaf.com/champions-cup/news/the-champions-cup-history-1962-1980/