Behind the perfectly appropriate facade of hospitality and mutual good-sportsmanship that will be on display (at least outside the stadium) is the undeniable fact that the two programs facing off on Saturday hate each other. 

The rivalry dates back to 1887, when the Wolverines traveled to the small Catholic school to their south and taught them the relatively new game of football. For eight years Michigan was perfectly happy to  play Notre Dame.

After all, the big state school to the north trounced the tiny upstart in South Bend. But then came 1902, when the Irish pulled an upset. Fueled by a toxic snit of wounded pride and anti-Catholicism, and displaying...

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