Third Harbaugh coaching in Super Bowl — Jim's son Jay — for John! By JOHN KRYK, QMI Agency

49ers head coach Jim Harbaugh (right) and his brother, Baltimore Ravens head coach John Harbaugh, speak to the media ahead of Super Bowl XLVII in New Orleans, La.,, Feb. 1, 2013. (BRIAN SNYDER/Reuters) Former Super Bowl quarterback Jim Miller weighs in on the big game NFL commissioner Roger Goodell unwelcome in New Orleans Cold-weather Super Bowl already stirring debate

NEW ORLEANS - By now, every sports fan knows of the coaching Harbaughs – Jim and John, rival sons of the retired longtime college coach, Jack.

And that Jim’s San Francisco 49ers face John’s Baltimore Ravens on Sunday in Super Bowl XLVII (6:30 p.m. EST, CTV/CBS).

There’s one more Harbaugh coaching in this game that few knew about until Friday.

Jay Harbaugh, Jim’s 23-year-old son from his first marriage, is a coaching intern – not for dad Jim’s Niners, but rather for Uncle John’s Ravens.