The most hyped coaching matchup in Super Bowl history will pit two brothers against each other in New Orleans this afternoon.
Baltimore Ravens head coach John Harbaugh will be facing his younger brother Jim, who coaches the San Francisco 49ers.
John Harbaugh says it's an amazing situation and he doesn't know how either will cope if they lose to their sibling.
It is the 10th time the Super Bowl has been held in New Orleans and the sixth time at the Superdome - which sheltered thousands of people for several days after Katrina made landfall.
