In fact , only eight teams have won it . Croatia 's Brazilian-born Eduardo da Silva reportedly will sing both national anthems . Group stage whittles teams down to 16 , which then enter March Madness-style bracket . The top four qualify for the knockout stages of the World Cup in Brazil next summer. Only eight teams have won Cup ; Brazil has won five and now has home-field advantage .
Croatia 's Brazilian-born Eduardo da Silva reportedly will sing both national anthems . Group stage whittles teams down to 16 , which then enter March Madness-style bracket . The top four qualify for the knockout stages of the World Cup in Brazil next summer. Only eight teams have won Cup ; Brazil has won five and now has home-field advantage .