Minnesota Vikings coach Leslie Frazier informed Christian Ponder Tuesday afternoon that he will start against the Green Bay Packers, sources told ESPN's Chris Mortensen. Frazier also informed Donovan McNabb that he was being demoted. SportsTrust Advisors, the agency that represents Ponder, sent a tweet on Tuesday congratulating its client for earning the start against the Packers. The Associated Press left messages for agent Jimmy Sexton and Vikings officials seeking further comment. NFL Network first reported the news. Read more: http://espn.go.com/nfl/story/_/id/7119351/sources-minnesota-vikings-start-rookie-christian-ponder-qb