West Ham's co-chairman David Sullivan issued a statement this afternoon praising the behaviour of fans:
While Sam Allardyce's tactics and the players will rightly be praised for an absolutely outstanding 3-0 win at our local rivals, our fans made sure that today's headlines were all about football rather than events in the stands.
On Sunday morning, I wrote an open letter to supporters attending the game to remind them they would be acting as ambassadors for our club. As expected, they did not let us down.
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