World Cup what to know: Mexico kicks off a supersized, 48-team tournament‎

After years of preparation, a supersized World Cup has finally arrived. This year's tournament — which is hosted by the U.S., Canada and Mexico — was expanded to 48 teams that will play in 16 stadiums in a record 104 matches over the 39-day tournament. Mexico gets the World Cup started Thursday and will be a heavy favorite when it hosts South Africa in Mexico City.