Rooney Mara is the early betting favorite to win the Academy Award for Best Supporting Actress in “Carol,” a feat that presumably would make her the first great-granddaughter of the founders of two NFL franchises to win an acting Oscar.

But her recent nomination alone bodes well for the Steelers, founded by her maternal great-grandfather, Art Rooney Sr. Thus far every time she has been nominated for an Oscar, one of her family’s teams has won the Super Bowl.

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The last time, as Best Actress for the 2011 film “The Girl with the Dragon Tattoo,” the Giants of her paternal great-grandfather Tim Mara won it all.

That winter, the Giants and Ms. Mara faced similarly formidable opponents. The Giants upset theirs, defeating the Patriots, 21-17, to win Super Bowl XLVI.

Mara later lost to the Academy Awards’ version of the Patriots: Meryl Streep.

The Steelers’ Super Bowl 50 quest got tougher on Friday, though, when the team ruled top receiver Antonio Brown out for Sunday’s NFL divisional playoff game against Denver.