Haka arrives at football, Did you know?

Question

Here you have the sources:

http://footballchampionsleague.blogspot.com/2008/08/haka-arrives-at-olympic-games.html

Answer 1

I did not know that it had been used in football(soccer) as i am a proud Australian and soccer isn't as popular as some sports here. i did however hear of it being used by some American football teams in America who had NZ and islander players on the team.