Each competitions have viewed format alterations, with expansions in the number of collaborating groups, introduction of new rounds, and adjustments in qualification conditions over the years. The group stage was played from September to December, whilst the knockout phase commenced in February, with matches commonly played on Tuesday and Wednesday https://konhci5520863.vblogetin.com/42271077/an-unbiased-view-of-what-are-the-uefa-champions-league-and-uefa-europa-league