After Week 7, there are far fewer undefeated teams in college football. Clemson's loss to Syracuse knocked the Tigers out of the No. 2 spot, and now Penn State, Georgia, TCU and Wisconsin remain the only outside challengers to No. 1 Alabama.
Several other high-ranking teams suffered their first losses of the season, too. Washington and Washington State lost to unranked opponents and put a Pac-12 qualifier to the College Football Playoff in doubt. In the AP Poll, Clemson went down to No. 7, Washington sank to No. 12 and Washington State fell to No. 15. Auburn also lost to LSU, which sent Auburn to No. 21 and pushed LSU from unranked to No. 24.
Oklahoma, Oklahoma State and Miami (FL) each entered the top ten this week. Memphis claimed a win over last week's No. 25 team Navy and took the No. 25 spot in this week's AP Poll. LSU entered at No. 25 in the Coaches Poll, with Memphis still unranked. Texas A&M entered the Coaches Poll at No. 24, but the Aggies are only the second-highest team receiving votes in the AP Poll.
BENDER: Latest College Football Playoff picture
The Big Ten represents the most teams in the Top 25 this week with five. The ACC, Big 12, Pac-12 and SEC each have four teams in the rankings. Three teams in the rankings represent the American Conference.
Here is a look at the latest college football rankings entering Week 8 of the season.
College football rankings: Top 25 AP Poll
| Rank | Team | No. 1 votes | W-L |
| No. 1 | Alabama | 61 | 7-0 |
| No. 2 | Penn State | 0 | 6-0 |
| No. 3 | Georgia | 0 | 7-0 |
| No. 4 | TCU | 0 | 6-0 |
| No. 5 | Wisconsin | 0 | 6-0 |
| No. 6 | Ohio State | 0 | 6-1 |
| No. 7 | Clemson | 0 | 6-1 |
| No. 8 | Miami (FL) | 0 | 5-0 |
| No. 9 | Oklahoma | 0 | 5-1 |
| No. 10 | Oklahoma State | 0 | 5-1 |
| No. 11 | USC | 0 | 6-1 |
| No. 12 | Washington | 0 | 6-1 |
| No. 13 | Notre Dame | 0 | 5-1 |
| No. 14 | Virginia Tech | 0 | 5-1 |
| No. 15 | Washington State | 0 | 6-1 |
| No. 16 | South Florida | 0 | 6-0 |
| No. 17 | NC State | 0 | 6-1 |
| No. 18 | Michigan State | 0 | 5-1 |
| No. 19 | Michigan | 0 | 5-1 |
| No. 20 | Central Florida | 0 | 5-0 |
| No. 21 | Auburn | 0 | 5-2 |
| No. 22 | Stanford | 0 | 5-2 |
| No. 23 | West Virginia | 0 | 4-2 |
| No. 24 | LSU | 0 | 5-2 |
| No. 25 | Memphis | 0 | 5-1 |
Others receiving votes: San Diego St. 56, Texas A&M 46, Iowa St. 16, Virginia 10, Kentucky 8, Utah 4, Mississippi St. 3, South Carolina 2, Iowa 2, Navy 2, Texas Tech 2, Georgia Tech 1, Marshall 1, Florida St. 1
College football rankings: Coaches Poll
| Rank | Team | No. 1 votes | W-L |
| No. 1 | Alabama | 63 | 7-0 |
| No. 2 | Penn State | 0 | 6-0 |
| No. 3 | Georgia | 0 | 7-0 |
| No. 4 | TCU | 0 | 6-0 |
| No. 5 | Wisconsin | 0 | 6-0 |
| No. 6 | Ohio State | 0 | 6-1 |
| No. 7 | Miami (FL) | 0 | 5-0 |
| No. 8 | Clemson | 0 | 6-1 |
| No. 9 | Oklahoma | 0 | 5-1 |
| No. 10 | USC | 0 | 6-1 |
| No. 11 | Oklahoma State | 0 | 5-1 |
| No. 12 | Washington | 0 | 6-1 |
| No. 13 | South Florida | 0 | 6-0 |
| No. 14 | Virginia Tech | 0 | 5-1 |
| No. 15 | Michigan | 0 | 5-1 |
| No. 16 | Notre Dame | 0 | 5-1 |
| No. 17 | NC State | 0 | 6-1 |
| No. 18 | Washington State | 0 | 6-1 |
| No. 19 | Michigan State | 0 | 5-1 |
| No. 20 | Central Florida | 0 | 5-0 |
| No. 21 | Auburn | 0 | 5-2 |
| No. 22 | Stanford | 0 | 5-2 |
| No. 23 | West Virginia | 0 | 4-2 |
| No. 24 | Texas A&M | 0 | 5-2 |
| No. 25 | LSU | 0 | 5-2 |
Others receiving votes: Kentucky 64; Memphis 50; Virginia 42; San Diego State 39; South Carolina 19; Utah 14; Navy 9; Mississippi State 6; Boise State 4; Colorado State 4; Marshall 3; Florida 2; Georgia Tech 2; Iowa State 2