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ALAMEDA, CA - JANUARY 09: Oakland Raiders new head coach Jon Gruden speaks during a news conference at Oakland Raiders headquarters on January 9, 2018 in Alameda, California. Jon Gruden has returned to the Oakland Raiders after leaving the team in 2001. (Photo by Justin Sullivan/Getty Images)

ALAMEDA, CA - JANUARY 09:  Oakland Raiders new head coach Jon Gruden speaks during a news conference at Oakland Raiders headquarters on January 9, 2018 in Alameda, California. Jon Gruden has returned to the Oakland Raiders after leaving the team in 2001.  (Photo by Justin Sullivan/Getty Images)