Robin van Persie struck after 33 seconds as Manchester United edged past West Ham 1-0 at Old Trafford.
But it turned into a nervy evening for the Barclays Premier League leaders, who were well below their best.
And whilst the visitors were not exactly on top form either on a bitterly cold evening, they came close to snatching a point late on, when Anders Lindegaard denied Carlton Cole from close range.
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