The worst team is defined by the number of points scored. If there are two or more teams with zero point, then the total goal (scored vs against) is compared. If total goal is the same, then the worst team is the one on the easier group. My bet is on Iran.
1. by post WC ranking? Probably Iran 2. by their stats during the tournament? Japan, Australia and Honduras probably all contenders.
Spain. Coming in as a top 5 and World Champion, if you are out after only 2 matches, you are very very bad.
it turned out to be Cameroon with goal (1-9), then Honduras (1-8), then Australia (3-9), all with zero points. did not expect Iran to have 1 point, better than Cameroon.