 Complete the following phrase:  Barcelona dethroned world and European champions Manchester United in the 2009 UEFA Champions League Final to qualify for the 2009 edition of the Club World Cup. Barcelona defeated Mexican club Atlante 31 in the semi-finals and met Estudiantes from Argentina in the final. After a very close encounter which saw the need for extra time, Lionel Messi scored from a header to snatch victory for Barcelona and complete an unprecedented sextuple six trophies in a calendar year. The 