(Elaine Thompson / Getty Images)

The Seattle Seahawks have a message for fans: think twice before picking a fight with any spectator who might be wearing a San Francisco 49ers jersey Sunday night.

For the latest meeting in the increasingly heated NFC West rivalry, the Seahawks will place undercover officers wearing 49ers gear around CenturyLink Field during the nationally televised, prime-time game. It’s a policy that won’t end with the game, either. The Seahawks plan to continue it in an effort to crack down on unruly behavior.

“We have great fans,” Seahawks President Peter McLoughlin said in a statement released by the team. “Our goal is to ensure a safe environment for all in attendance, including visiting team fans.”

Fans who pick on the wrong person and are booted from the stadium will have to complete a four-hour online course and pay $75 to be allowed to return. Truly egregious behavior can result in the revocation of season tickets.

Home-field advantage should have its limits and fans of opposing teams have a right to be safe. Two years ago, a San Francisco Giants fan was severely beaten after a game at Dodgers Stadium. On Monday night at FedEx Field, a Redskins fan turned a beer can into a weapon, another fan told DC Sports Bog’s Dan Steinberg, in an incident that never crossed from merely scary into dangerous territory.

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