(CNN) -- One Harbaugh will win Super Bowl XLVII. Another will lose it. That much is guaranteed after the San Francisco 49ers, coached by Jim Harbaugh, and the Baltimore Ravens, led by his brother John Harbaugh, beat their respective foes in conference championship games Sunday. Those wins mean the Harbaughs will be the first siblings to face off as head coaches in the NFL's title contest and, in fact, for any major U.S. professional sports championship. Both teams rallied from halftime deficits on the road to earn berths in the Super Bowl, which will be played February 3 in New Orleans.
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NEW: Baltimore's John Harbaugh says he admires his brother Jim, the 49ers' coach
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The two will be the first brothers to face off, as coaches, for a major U.S. sports championship
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San Francisco rallies from a big deficit to beat Atlanta 28-24 in the NFC Championship game
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Baltimore shuts out New England in the second half , winning 28-13 to reach the Super Bowl
And the @placeholder started out strong, jumping to a 3-0 lead and -- after a Baltimore score -- entering halftime up 13-7.