After suffering its second consecutive loss, Ole Miss is no longer in line for college football's final four this season.  Oregon replaces the Rebels at number-four of the College Football Playoff selection committee's second edition of the top-25 poll.  Mississippi State, Florida State and Auburn remain steady in the top three spots.  Alabama is fifth, followed by TCU, Kansas State, Michigan State, Arizona State and Notre Dame.  Mississippi falls to 11th, while Georgia drops from 11th to 20th after its loss to Florida.  The semifinal matchups will be announced on Sunday, December 7th.  The semifinals will be played on January 1st at the Rose Bowl and Sugar Bowl.  The National Championship Game will take place January 12th at AT&T Stadium in Arlington, Texas.