Here is a reason for undercover police at Century Link
[urltargetblank]http://mynorthwest.com/11/2346228/Seahawks-supporter-charged-with-assaulting-rival-fan-at-CenturyLink-Field[/urltargetblank]With the Vikings losing the Nov. 4, 2012 game, Copp and his wife got up to leave towards the end of the game to beat traffic and exchanged a few more jokes with other fans, when William D. Van Meveren allegedly "sucker-punched" him, according to a detective who filed the assault report.