The Uefa Champions League is one of the most prestigious tournaments in the world and the most prestigious club competition in European football. The final of the 2011 tournament was the most-watched UEFA Champions League final to date, as well as the most watched annual sporting event worldwide that year, drawing 178.7 million television viewers.
Real Madrid is the most successful club in the competition's history, having won the tournament nine times, including the first five seasons it was contested. Spanish clubs have accumulated the highest number of victories, with 13 wins. The title has been won by 22 different clubs, 12 of which have won the title more than once. Since the tournament changed name and structure in 1992, no club has managed consecutive wins, with Milan being the last club to successfully defend their title, in 1990.