Cowboys add former Lions coach Marinelli to staff

"The big part of playing the defense this way is getting people who really, really believe in it," said Dungy, who was in the Dallas area Friday for the NCAA convention. "You have to sell it to your group. And what we had back then, we hand Monte, Herm Edwards, Lovie Smith and Rod Marinelli. And they all believed."

Marinelli has 17 years of NFL experience among his 37 in coaching. He was a college assistant at Utah State, California, Arizona State and Southern Cal.

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