(CNN)-This year's Super Bowl brings sibling rivalry to a whole other level.
John Harbaugh, coach of the Baltimore Ravens, will face off against his younger brother Jim, head coach of the San Francisco 49ers.
The two are 15-months apart in age.
Their parents say they're proud to have such successful sons.
"You're gonna ask us how we feel on this historic event. Jackie. Who has it better than us? NOOOBODY!"
The so-called "Harbowl" will take place this Sunday at the Mercedes-Benz Superdome in New Orleans.
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