In an effort to reduce the number of drunk losers who ruin football games for everyone else, security personnel at Seattle’s CenturyLink Field will go undercover and dress as 49er fans during Sunday night’s game between San Francisco and the Seahawks. Fans who just can’t handle seeing someone wearing the jersey of the opposing team without becoming unruly will be removed from the stadium. And they won’t be able to come back until they complete a four-hour online course. In other news: Go Niners.