For the NFL, it's a milestone moment: Jim Harbaugh of the 49ers takes on John Harbaugh of the Baltimore Ravens in the first-ever meeting between brotherly head coaches.
It's being billed as the HarBowl.
For little sister Joani, it was called "childhood."
She's had a front-row seat for the battlin' Harbaugh brothers since she can remember. She was their designated runner in games of pickle and their capacity crowd of one when they waged basketball wars in the basement on a hoop made out of a wire hanger.