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HOUSTON, TX - FEBRUARY 01: Offensive Coordinator Kyle Shanahan watches a Super Bowl LI practice on February 1, 2017 in Houston, Texas. (Photo by Tim Warner/Getty Images)

HOUSTON, TX - FEBRUARY 01:  Offensive Coordinator Kyle Shanahan watches a Super Bowl LI practice on February 1, 2017 in Houston, Texas.  (Photo by Tim Warner/Getty Images)