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NEW ORLEANS - JANUARY 15: Dallas Cowboys running back Tony Dorsett #33 runs the ball into the endzone and raises his hand in triumph as the referee makes the call during Superbowl XII against the Denver Broncos at the Superdome on January 15, 1978 in New Orleans, Lousiana. The Cowboys defeated the Broncos 27-10. (Photo by Focus on Sport via Getty Images)

NEW ORLEANS - JANUARY 15: Dallas Cowboys running back Tony Dorsett #33 runs the ball into the endzone and raises his hand in triumph as the referee makes the call during Superbowl XII against the Denver Broncos at the Superdome on January 15, 1978 in New Orleans, Lousiana. The Cowboys defeated the Broncos 27-10. (Photo by Focus on Sport via Getty Images)