NEW YORK (AP) -- A couple of games played during week two of the season had a major effect on the first College Football Playoff rankings.
Georgia, Alabama, Notre Dame and Clemson were the top four teams in the selection committee's initial top 25 released Tuesday night.
Oklahoma, Ohio State and Penn State were next as the committee members let head-to-head results and strength of schedule be their guide. The final rankings that will determine the participants in the College Football Playoff semifinals come out Dec. 3.
Georgia and Alabama, Southeastern Conference rivals, are both 8-0 and have been dominating their competition. The Bulldogs' one close game was at Notre Dame in September, a 20-19 victory.
Committee chairman Kirby Hocutt, the athletic director for Texas Tech, said the Bulldogs had a slight edge over the Crimson Tide because of its victory against the Irish on Sept. 9.
The Fighting Irish (7-1) have not lost since, including blowouts of Michigan State (24th), Southern California (17th) and North Carolina State (20th). Hocutt noted those three victories against teams in the committee's top 25, along with the close lose to Georgia as the reason for the Irish being the highest ranked in a group of one-loss teams from three to seven.
"The teams ranked three through seven are very evenly matched," Hocutt said.
On the same night Georgia beat Notre Dame, Oklahoma went to Columbus, Ohio, and beat the Buckeyes 31-16.
"For the teams five through seven, their head-to-head results were very important to the committee," Hocutt said.
Ohio State (7-1) rallied to beat Penn State (7-1) last Saturday, 39-38.
In the AP Top 25, Ohio State was No. 3, Penn State No. 7 and Oklahoma was No. 8. Those rankings had some Sooners wondering if the committee would do something similar. They were happy to find out that was not the case.
"We all just watched it as a team just now," Oklahoma linebacker Ogbonnia Okoronkwo said. "We were all just jumping around yelling. Everybody's hungry. We feel like our foot's in the door, so we want to go ahead and make it happen."
Clemson (7-1), the defending national champion, and Alabama have been ranked in the initial top four of the by the selection committee each of the last three seasons. The Tigers and Tide played for the last two national titles, with each winning one.
Over the first three seasons of the playoff, a total of five teams have been ranked in the top four of the initial ranking and gone on to reach the semifinals: Florida State (which was second) in 2014; Clemson (first) and Alabama (fourth) in 2015; and Alabama (first) and Clemson (second) in 2016.
The rest of the top 10 was TCU at eight, followed by unbeatens Wisconsin and Miami.
Hocutt pointed to strength of schedule as the problem for the Badgers, who were ranked fourth in the latest AP Top 25, and Hurricanes. The strongest team Wisconsin has defeated is Northwestern (5-3) and Miami has only two victories against teams with winning record, Hocutt noted.
WHAT WE LEARNED:
GOOD WINS BAD LOSS, STILL: Clemson's six victories against teams with winning records, including Virginia Tech (13th) and Auburn (14th) outweighed a loss on the road to a Syracuse team that is 4-4.
That's been a fairly consistent trend in the short history of the selection committee. The members tend not to get too caught up in the notion of a bad loss.
Hocutt also noted that Clemson playing the second half without injured quarterback Kelly Bryant factored into its loss. He also said that Alabama got credit for beating Florida State to start the season when the Seminoles had their starting quarterback Deondre Francois for most of the game.
PAC-12 IS IN TROUBLE: Washington is the highest ranked of the Pac-12 teams at No. 12. The Huskies are the only team left in the conference with a chance to win the league at 12-1, but their position behind a plethora of teams with one loss means they'll need a good deal of help.
On the bright side, plenty of those teams in front of the Huskies have to play each other.
IT MIGHT NOT BE JUST THE PAC-12 IN TROUBLE: The top four includes teams from only two of Power Five conferences, and if Georgia, Alabama and Notre Dame keep winning it very well could stay that way.
The Bulldogs and Tide eventually would play each other in the SEC championship game, but if both arrive 12-0 in Atlanta, and the independent Irish finish 11-1, the Big Ten, Big 12, Atlantic Coast Conference and Pac-12 could be vying for one spot.
AP Sports Writer Cliff Brunt in Norman, Oklahoma, contributed to this report.
College Football Playoff Rankings
Oct. 31, 2017
1. Georgia 8-0
2. Alabama 8-0
3. Notre Dame 7-1
4. Clemson 7-1
5. Oklahoma 7-1
6. Ohio St. 7-1
7. Penn St. 7-1
8. TCU 7-1
9. Wisconsin 8-0
10. Miami 7-0
11. Oklahoma St. 7-1
12. Washington 7-1
13. Virginia Tech 7-1
14. Auburn 6-2
15. Iowa St. 6-2
16. Mississippi St. 6-2
17. Southern Cal 7-2
18. UCF 7-0
19. LSU 6-2
20. NC State 6-2
21. Stanford 6-2
22. Arizona 6-2
23. Memphis 7-1
24. Michigan St. 6-2
25. Washington St. 7-2
The College Football Playoff Selection Committee will issue weekly rankings each Tuesday, with the final rankings being announced Sunday, Dec. 3 (Noon EST). The playoff semifinals will match the No. 1 seed vs. the No. 4 seed, and No. 2 will face No. 3. The semifinals will be hosted at the Rose Bowl and Sugar Bowl on Jan. 1, 2018. The championship game will be played on Jan. 8, 2018 at Atlanta.