. Jackie and Jack Harbaugh, parents of San Francisco 49ers coach Jim Harbaugh, and Baltimore Ravens coach John Harbaugh, stand before an NFL football game between the 49ers and the Seattle Seahawks, in San Francisco, Calif., on Sept. 11, 2011. Jack Harbaugh has watched his sons go at it for nearly five decades. That\'s why he sees no need to be there in person for Thursday\'s, Nov. 24, 2011, history-making matchup between his sons. (AP Photo/Paul Sakuma, File)
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