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(WUSA) -- DC Mayor Vincent Gray lost his bet against Seattle Mayor Mike McGinn when he predicted the Washington Redskins would beat the Seahawks.

Gray and McGinn agreed that the losing city would have to fly the other city's flag for a day, and Sunday the Seahawks beat the Redskins 24-14.

Gray tweeted out a photo of the Seattle flag on the John A. Wilson building on Thursday with the words: "DC is good on its word. Raising the Seattle city flag over the Wilson Building today"

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