Domestic cup competitions are knockout tournaments held within a specific country, featuring teams from various levels of the national league system. These competitions allow clubs to compete for a prestigious trophy, often culminating in a final match that garners significant attention from fans and media. Examples include the FA Cup in England and the Copa del Rey in Spain. Teams from different divisions participate, creating opportunities for lower-tier clubs to face top-tier teams, which can lead to surprising upsets. The format typically involves single-elimination rounds, where the losing team is eliminated, making each match crucial for progression in the tournament.