also the 1998 Tiger Cup (SE Asian Championship)
http://en.wikipedia.org/wiki/1998_Tiger_Cup
Vietnam were the hosts and if they made the semifinals they would play in Hanoi no matter what. Expected to win the group the ended up 2nd.
So the first place team in the other group would not only have to play Vietnam IN Vietnam but have to travel 2000km from Ho Chi Minh City to Hanoi.
So nobody wanted to win. Indonesia scored an own goal in injury time.
Of course the team neither team want to play, Singapore, went on the lift the trophy.