This year’s edition of the World Cup will be the biggest ever with an expanded field of 48 teams , three host countries and 16 stadiums staging the record 104 matches over the 39-day tournament. The tournament being held in the United States, Canada and Mexico is the first since FIFA expanded the field from 32 teams to 48, adding four more groups in the initial stage and a new round of 32 in the knockout portion. The World Cup last expanded for the 1998 tournament with the last seven editions