College Football Playoff: Top four seeds revealed [Video]

WASHINGTON — SMU captured the last open spot in the 12-team College Football Playoff on Sunday, bumping Alabama out of the first 12-team bracket that placed undefeated Oregon at No. 1.

The selection committee preferred the Mustangs (11-2), losers of a heartbreaker in the Atlantic Coast Conference title game, who had a far less difficult schedule than Alabama (9-3) of the SEC but, ultimately, still one fewer loss.

The expanded bracket marks a new era for college football, though the Alabama-SMU debate made clear that there is no perfect formula for identifying a champion.

The tournament starts Dec. 20-21 with four first-round games involving teams seeded 5-12. It concludes Jan. 20 with the national title game in Atlanta.

Georgia, Boise State and Arizona State join Oregon with first-round byes

Georgia, the SEC champion, was seeded second; Boise State, the Mountain West champion, earned the third seed; and Big 12 titlist Arizona …