Weekly college football top 25 rankings are a big part of every season, and Athlon Sports will update its top 25 following the games each weekend. The ninth weekend of the 2017 season was filled with exciting games and intriguing conference matchups. The top games of Week 9 took place in the afternoon, as Ohio State rallied to beat Penn State in a 39-38 thriller. The Buckeyes used a huge second-half performance from their defense, along with a standout performance from quarterback J.T. Barrett to knock off the Nittany Lions. Notre Dame dominated NC State 35-14, Georgia crushed rival Florida 42-7 and Iowa State upset TCU 14-7 to round out some of the top games from the afternoon slate on Saturday, Elsewhere around the nation, Clemson rebounded from the loss to Syracuse by beating Georgia Tech, and Mississippi State handled Texas A&M in College Station to return to the top 25 rankings. Alabama - the nation's No. 1 team - was on bye in Week 9.
College Football Top 25 Rankings
1. Alabama (8-0)
Week 9 Result: Bye Week
The Crimson Tide had a bye in Week 9 and return to action on Saturday night against LSU.
2. Georgia (8-0)
Week 9 Result: Defeated Florida
Bulldogs move once step closer to winning SEC Championship after blowing out rival Florida in Jacksonville.
3. Notre Dame (7-1)
Week 9 Result: Defeated NC State
Fighting Irish gashed a standout NC State defensive line for 318 rushing yards and two touchdowns in Saturday’s 35-14 victory.
4. Clemson (7-1)
Week 9 Result: Defeated Georgia Tech
A healthy Kelly Bryant at quarterback makes a big difference for the Tigers’ offense.
5. Oklahoma (7-1)
Week 9 Result: Beat Ohio State
Oklahoma’s place in the Big 12 and CFB Playoff mix is likely to be decided in next two weeks with matchups against Oklahoma State and TCU.
6. Ohio State (7-1)
Week 9 Result: Beat Penn State
Since the loss to Oklahoma, quarterback J.T. Barrett has passed for 22 touchdowns and zero interceptions. And Barrett’s performance against Penn State should get the senior into the Heisman conversation.
7. Penn State (7-1)
Week 9 Result: Lost to Ohio State
Despite the loss to Ohio State, don’t count out the Nittany Lions in the CFB Playoff mix.
8. Wisconsin (8-0)
Week 9 Result: Defeated Illinois
The Badgers have allowed only one opponent (Northwestern) to score more than 20 points in a game this season.
9. Miami (7-0)
Week 9 Result: Defeated North Carolina
The Hurricanes turned in a sluggish performance against North Carolina but once again found a way to win.
10. TCU (7-1)
Week 9 Result: Lost to Iowa State
Three turnovers (including two in the red zone) were tough to overcome against Iowa State.
11. Oklahoma State (7-1)
Week 9 Result: Defeated West Virginia
The Cowboys’ defense came up big in Saturday’s win against West Virginia.
12. Washington (7-1)
Week 9 Result: Defeated UCLA
The Huskies remain the Pac-12’s best hope to get a team in the CFB Playoff. However, this team has a lot of work to do in November in order to get to the top four.
13. Virginia Tech (7-1)
Week 9 Result: Defeated Duke
The Hokies have allowed only 20 points over their last three games.
14. Iowa State (6-2)
Week 9 Result: Defeated TCU
Matt Campbell’s second season has been a special one in Ames. The Cyclones have two wins – Oklahoma and TCU – over top-five teams this season.
15. UCF (7-0)
Week 9 Result: Defeated Austin Peay
The Knights are the clear frontrunner to earn the Group of 5 bowl spot in a New Year’s Six bowl.
16. LSU (6-2)
Week 9 Result: Bye Week
The Tigers had a bye in Week 9 and return to action on Saturday against Alabama.
17. USC (7-2)
Week 9 Result: Defeated Arizona State
Arizona State’s improved defense was no match for USC’s offense on Saturday night, as the Trojans recorded 607 total yards in the 48-17 win.
18. Auburn (6-2)
Week 9 Result: Bye Week
Auburn had a bye in Week 9 and return to action in Week 10 against Texas A&M.
19. NC State (6-2)
Week 9 Result: Lost to Notre Dame
The Wolfpack’s CFB Playoffs are over after loss at Notre Dame. However, a win over Clemson in Week 10 would put coach Dave Doeren’s team in control to claim the ACC’s Atlantic Division title.
20. Stanford (6-2)
Week 9 Result: Defeated Oregon State
It wasn’t pretty, but the Cardinal found a way to escape Corvallis with a victory.
21. Mississippi State (6-2)
Week 9 Result: Defeated Texas A&M
Each of Mississippi State’s six victories have come by 20 points or more this season
22. Michigan State (6-2)
Week 9 Result: Lost to Northwestern
Spartans’ running game managed only 95 yards in loss to Northwestern.
23. Michigan (6-2)
Week 9 Result: Defeated Rutgers
Quarterback Brandon Peters (10 of 14 for 124 yards and a score) finally got an extended look in on-field action during Saturday's win over Rutgers.
24. Memphis (7-1)
Week 9 Result: Beat Tulane
With Tulsa, SMU and East Carolina remaining, Memphis has a clear (and favorable) path to the American Athletic Conference’s West Division title.
25. Arizona (6-2)
Week 9 Result: Defeated Washington State
The emergence of quarterback Khalil Tate has propelled Arizona into the mix to win the Pac-12 South.