(Eugene, OR)  --  Oregon and head football coach Mark Helfrich have agreed to a new five-year extension.  The pact runs through January 2020 and is worth at least 17.5-million dollars.  The 41-year-old Helfrich has gone 24-and-4 in two seasons since replacing Chip Kelly.  Helfrich guided to Ducks to a spot in this year's national title game, where they lost to Ohio State.