The UEFA Champions League used to start with a double round-robin team stage of 32 groups until eventually it developed right into a league stage of 36 groups, which is preceded by two qualification 'streams' for groups that do not get immediate entry for the tournament suitable. The UEFA Champions https://martinrxfbl.blogadvize.com/44276148/what-are-the-uefa-champions-league-and-uefa-europa-league-things-to-know-before-you-buy