The Campeonato de Apertura (Opening Championship) was an annual competition for Chilean football teams at the beginning of the season.
The Campeonato de Apertura was sometimes disputed in a knock-out system, other times in a mini-league system.
It is considered as the precursor of Copa Chile, Chile's official cup competition that started in 1958.
Nowadays, there are in Chilean football two national league competitions per year, one of them called Torneo de Apertura (Opening Tournament).
This article about a CONMEBOL/South American association football competition is a stub.