SEATTLE — The Seattle Seahawks opened the 2025 season on Sunday with more than 68,000 fans at Lumen Field, including thousands of 49ers fans and a handful of undercover police officers disguised as supporters of the division rival.

The Seahawks announced last week that plainclothes officers would wear opposing team jerseys to blend into the crowd.

The team said the effort is intended to help officers detect fans violating the stadium’s code of conduct.

“It makes sense ... they've had plainclothes officers out there all the time because it’s quite the interesting gameday experience,” said KING 5 law enforcement analyst and former King County Sheriff John Urquhart. “Especially if they're going to get harassed or have some drunk coming up to them, whatever it is. It makes sense.”

The team

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