The New England Patriots are hot favourites to beat the New York Giants in Super Bowl XLII on Sunday.
But if the Patriots are to become just the second team ever to finish an unbeaten season with Super Bowl success, they must get the better of the Giants on several fronts.
Veteran American sports broadcaster Mike Carlson will be an analyst when the Super Bowl appears on BBC television for the first time this weekend.
He looks at the six battles that will provide the highlights on Super Sunday.
Mike Carlson was speaking to BBC Sport's Martin Gough
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