Barcelona have been crowned as the 2015 FIFA Club World Cup champions after the Spanish La Liga giants won against Argentine club River Plate 3-0 in the final match at International Stadium Yokohama in Japan on Sunday.The latest UEFA Champions League winners Barcelona met Copa Libertadores' defending champions River Plate in the final.Barcelona stars, Argentine forward Lionel Messi and Uruguayan striker Luis Suarez brought the glory for their team. Messi opened the scoring in 36', before Suarez put the ball into the River Plate net twice in 49' and 68'.The Catalan heavyweights won the cup for the third time after 2009 and 2011, making Barca the top winners of the FIFA Club World Cup.