1.) Name given to somebody who purposely loses a game (typically the Halo games) on Xbox 360 to cause others to go down in rank and to benefit later on in terms of rank, etc.
2.) One of the four leaders of the Federation of Asshole Gamers (F@G). Is known as XBL Number 1's Deranker and for betraying.
1: There's no way I'm going to win this game, I have a Deranker on my team.