The UEFA Champions League and UEFA Europa League winners square off in the annual association football tournament known as the UEFA Super Cup. Founded in 1972, it was played between the winners of the European Cup (renamed the UEFA Champions League in 1993) and the European/UEFA Cup Winners’ Cup until 1999, while the latter was abandoned and was merged with the UEFA Cup (renamed the Europa League in 2009) by UEFA. The 1999 UEFA Super Cup, in which Lazio defeated Manchester United 1-0, was the final Super Cup played under this configuration. Milan became the first team to win the UEFA Super Cup twice in a row (1989 and 1990) when they won back-to-back season games. Who has won the most UEFA Super Cup?