Undefeated Oregon is the No. 1 team in the first rankings released Tuesday by the College Football Playoff selection committee.

The Ducks were followed by Ohio State, Georgia, Miami and Texas in the top five.

Penn State, Tennessee, Indiana, BYU, Notre Dame, Alabama and Boise State round out the top 12 team that would compete in the newly expanded playoff at the end of the season.

Because the top four seeds must be conference champions under the new CFP format, Oregon (Big Ten), Georgia (SEC), Miami (ACC), and BYU (Big 12) would receive first-round byes if the initial rankings were used for the 12-team bracket.

The first round matchups would be as follows: Boise State at Ohio State, Alabama at Texas, Notre Dame at Penn State and Indiana at Tennessee.

Ohio State remains the consensus betting favorite to win the national title at ESPN BET at +325, slightly ahead of Georgia and Oregon, both at +400. There were no significant changes in the odds of winning the national title after the rankings were released.

The SEC and Big Ten each had four teams in the top 12. Undefeated BYU is the only Big 12 program in the top 12, and undefeated Miami is the only ACC team after Clemson suffered its second loss last week, to Louisville At home.

Boise State, whose only loss came by three points at Oregon on Sept. 7, was the highest-ranked team in a Group of 5 conference.

SMU was ranked No. 13 in the selection committee’s rankings, followed by Texas A&M, LSU, Ole Miss, Iowa State, Pittsburgh, Kansas State and Colorado.

Washington State, Louisville, Clemson, Missouri and Undefeated Army rounded out the top 25.

After a decade with a four-team playoff, CFP Selection Committee Chairman Warde Manuel said the group’s mission hasn’t changed with an expanded group.

“The process is the same,” Manuel said. “We rank the top 25 teams, from 1 to 25, and that is exactly what this process has been designed to do from the beginning.”

Ohio State, after last week’s impressive 20-13 win at Penn State, was given the title for the No. 2 spot over Georgia due to Oregon’s one-point loss, according to Manuel. The Bulldogs fell 41-34 to Alabama after trailing by 28 points in the first half and had closer-than-expected wins over Kentucky, Mississippi State and Florida.

Georgia defeated Texas 30-15 on October 19. The Longhorns were ranked No. 1 in the AP and coaches poll at the time.

“You know, we’re splitting looking at two great teams,” said Manuel, Michigan’s athletic director.

Indiana, which is 9-0 for the first time in program history after beating Michigan State 47-10 last week, was one spot ahead of BYU. The Hoosiers have yet to defeat a ranked opponent and have played the schedule thus far in 103rd place. They host defending champion Michigan on Saturday and play at Ohio State on November 23.

The Cougars are 8-0 heading into Saturday’s game against rival Utah. They won 18-15 at SMU and defeated Kansas State 38-9 at home.

“I mean Indiana, their schedule isn’t as strong as BYU,” Manuel said. “But what Indiana has done on the court, when we look at those games, they’re winning by double digits, averaging 33 points per game more than their opponents. They’re solid on both ends, offensively and defensively. They’re just a very, very great team, and that includes BYU.”

Army (8-0) would need to top Boise State to be automatically selected as the fifth-highest ranked conference champion. The Black Knights have yet to defeat a ranked opponent. They will play Notre Dame on November 23 at Yankee Stadium in New York City.

The four first-round matches will be played on December 20 and 21 at the home campus of the higher-seeded teams. The four quarterfinal games will be held at the VRBO Fiesta Bowl, Chick-fil-A Peach Bowl, Rose Bowl presented by Prudential and Allstate Sugar Bowl on December 31 and January 1.

The two semifinals will take place at the Capital One Orange Bowl and Goodyear Cotton Bowl on January 9 and 10.

The CFP National Championship, presented by AT&T, is scheduled for January 20 at Mercedes-Benz Stadium in Atlanta.

ESPN’s David Purdum contributed to this report.