This is a battle between two rookies that will likely determine how the Broncos’ offense script goes. Freeman, fresh off a strong preseason, was officially promoted to the starting running back roleon Monday. After four strong years at Oregon, Freeman is the first rookie running back to open the season as starter for Denver since Terrell Davis. On the opposite side is Griffin, a rookie linebacker out of UCF who is missing his left hand and whose brother, Shaquill, plays cornerback for Seattle. More than a feel-good story, Shaquem led the Seahawks with 26 preseason tackles and is poised to start at linebacker in place of K.J. Wright, who is recovering from knee surgery. Seattle ranked 19th in rushing yards allowed per game last year, so the Broncos will look to take advantage there.