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      David Close is a Sports News Supervisor for CNN Sports.

    • EAST LANSING, MICHIGAN - DECEMBER 03: Head coach Mike Krzyzewski of the Duke Blue Devils reacts from the bench while playing the Michigan State Spartans at the Breslin Center on December 03, 2019 in East Lansing, Michigan. (Photo by Gregory Shamus/Getty Images)

      Duke basketball head coach Mike Krzyzewski to retire in 2022

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