Superbowl: Harbaugh brothers go head-to-head

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Two brothers will go head-to-head as coaches for the first time at the annual superbowl in New Orleans.

Tens of thousands of American football fans will watch Jim Harbaugh's San Francisco 49ers take on older brother John Harbaugh's Baltimore Ravens at the Mercedes-Benz Superdome.

Chris Mitchell reports from the arena.

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