Ashton completed the 90 minutes, with the Hammers having already used their three substitutes, but he looked laboured and his worst fears were confirmed after the game.
It is another massive setback for Ashton and Hammers boss Alan Curbishley said: "Dean has hurt his medial knee ligament. I would think he is very doubtful for England. He couldn´t really run near the end so I imagine that is it for him."
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