Baltimore Ravens coach John Harbaugh and San Francisco 49ers coach Jim Harbaugh are hardly the only high-profile siblings who've squared off in their arena of expertise. The AP is asking some others who can relate how to handle going against a family member in the Super Bowl.
When NFL quarterbacks Eli and Peyton Manning squared off during a regular season game, at least one parent didn't have too hard a time deciding who to root for.
``I knew my mom was going to root for me - I'm the baby of the family, so that was an easy one,'' Eli Manning said.
But sibling battles can be tough on parents, the New York Giants quarterback said.
``It's hard to be excited for one child winning a game and also disappointed for the other one that didn't,'' he said.
As for the Harbaugh brothers: ``I think they're just both trying to figure out how to get a win.''
Eli's brother Peyton Manning says the Harbaughs have handled the week well, knowing one brother will be happy Sunday night while the other will be disappointed.
``Neither would be in this game if they weren't excellent coaches and no matter what happens tomorrow night, they're still excellent coaches. That's just a matter of fact,'' Peyton Manning said.
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