The addition of Colorado to the new Pac-12 means Oregon gets a renewal of an occasional and long-dormant regular season series. The teams met twelve times between 1949 and 1987, and the regular season series has been knotted at six wins each for a generation.

The six home-and-home series have included high drama, intensity, historic interest, tragedy, comedy and farce, along with football of wildly varying quality. So, with the Ducks on the cusp of renewing what has been a very competitive regular-season rivalry, come on over to DuckDowns for a look at those twelve previous contests, two at a time.

1949 - 1950: In which Woodley Lewis sets a record for kickoff returns that still stands, and later buys a bowling alley; and Jim Aiken completes a three-year swan-dive from Cotton Bowl Genius to Coach of Worst Oregon Team Ever.

1955 - 1956:  In which the Game of the Week originates from Eugene for the first time (but nobody in town can see it); later, Colorado plays gracious host in the opener of its new stadium, and Cas is hanged in effigy.

(Moved this from FanShots, because nobody ever reads those.)