college football playoff chionship alabama vs clemson national college football playoff college football playoff ncaa national chionship trophy 2017 college football national college football chionship college football playoff 2017 cfp chionship blakeway gigapixel college football playoff 2017 cfp national chionship clemson beats bama for national college football playoff selection show college football chionship clemson dethrone top ranked tide halftime coming to college football playoff college football chionship cfp national chionship rings 2017 college football national chionship college football le since 1981 college football chionship clemson in college football playoff college football playoff national