CFB Playoff Rankings
| Wk | Date | Rk | School | Prev | Chng | Conf |
|---|---|---|---|---|---|---|
| 15 | Final | 1 | Clemson (12-1) | 1 | ACC (Atlantic) | |
| 15 | Final | 2 | Oklahoma (12-1) | 3 | 1 | Big 12 |
| 15 | Final | 3 | Georgia (12-1) | 6 | 3 | SEC (East) |
| 15 | Final | 4 | Alabama (11-1) | 5 | 1 | SEC (West) |
| 15 | Final | 5 | Ohio State (11-2) | 8 | 3 | Big Ten (East) |
| 15 | Final | 6 | Wisconsin (12-1) | 4 | 2 | Big Ten (West) |
| 15 | Final | 7 | Auburn (10-3) | 2 | 5 | SEC (West) |
| 15 | Final | 8 | USC (11-2) | 10 | 2 | Pac-12 (South) |
| 15 | Final | 9 | Penn State (10-2) | 9 | Big Ten (East) | |
| 15 | Final | 10 | Miami (FL) (10-2) | 7 | 3 | ACC (Coastal) |
| 15 | Final | 11 | Washington (10-2) | 13 | 2 | Pac-12 (North) |
| 15 | Final | 12 | UCF (12-0) | 14 | 2 | American (East) |
| 15 | Final | 13 | Stanford (9-4) | 12 | 1 | Pac-12 (North) |
| 15 | Final | 14 | Notre Dame (9-3) | 15 | 1 | Ind |
| 15 | Final | 15 | Texas Christian (10-3) | 11 | 4 | Big 12 |
| 15 | Final | 16 | Michigan State (9-3) | 16 | Big Ten (East) | |
| 15 | Final | 17 | LSU (9-3) | 17 | SEC (West) | |
| 15 | Final | 18 | Washington State (9-3) | 18 | Pac-12 (North) | |
| 15 | Final | 19 | Oklahoma State (9-3) | 19 | Big 12 | |
| 15 | Final | 20 | Memphis (10-2) | 20 | American (West) | |
| 15 | Final | 21 | Northwestern (9-3) | 21 | Big Ten (West) | |
| 15 | Final | 22 | Virginia Tech (9-3) | 22 | ACC (Coastal) | |
| 15 | Final | 23 | Mississippi State (8-4) | 23 | SEC (West) | |
| 15 | Final | 24 | North Carolina State (8-4) | 24 | ACC (Atlantic) | |
| 15 | Final | 25 | Boise State (10-3) | MWC (Mountain) | ||
| Wk | Date | Rk | School | Prev | Chng | Conf |
| 14 | 2017-11-28 | 1 | Clemson (11-1) | 3 | 2 | ACC (Atlantic) |
| 14 | 2017-11-28 | 2 | Auburn (10-2) | 6 | 4 | SEC (West) |
| 14 | 2017-11-28 | 3 | Oklahoma (11-1) | 4 | 1 | Big 12 |
| 14 | 2017-11-28 | 4 | Wisconsin (12-0) | 5 | 1 | Big Ten (West) |
| 14 | 2017-11-28 | 5 | Alabama (11-1) | 1 | 4 | SEC (West) |
| 14 | 2017-11-28 | 6 | Georgia (11-1) | 7 | 1 | SEC (East) |
| 14 | 2017-11-28 | 7 | Miami (FL) (10-1) | 2 | 5 | ACC (Coastal) |
| 14 | 2017-11-28 | 8 | Ohio State (10-2) | 9 | 1 | Big Ten (East) |
| 14 | 2017-11-28 | 9 | Penn State (10-2) | 10 | 1 | Big Ten (East) |
| 14 | 2017-11-28 | 10 | USC (10-2) | 11 | 1 | Pac-12 (South) |
| 14 | 2017-11-28 | 11 | Texas Christian (10-2) | 12 | 1 | Big 12 |
| 14 | 2017-11-28 | 12 | Stanford (9-3) | 21 | 9 | Pac-12 (North) |
| 14 | 2017-11-28 | 13 | Washington (10-2) | 17 | 4 | Pac-12 (North) |
| 14 | 2017-11-28 | 14 | UCF (11-0) | 15 | 1 | American (East) |
| 14 | 2017-11-28 | 15 | Notre Dame (9-3) | 8 | 7 | Ind |
| 14 | 2017-11-28 | 16 | Michigan State (9-3) | 16 | Big Ten (East) | |
| 14 | 2017-11-28 | 17 | LSU (9-3) | 18 | 1 | SEC (West) |
| 14 | 2017-11-28 | 18 | Washington State (9-3) | 13 | 5 | Pac-12 (North) |
| 14 | 2017-11-28 | 19 | Oklahoma State (9-3) | 19 | Big 12 | |
| 14 | 2017-11-28 | 20 | Memphis (10-1) | 20 | American (West) | |
| 14 | 2017-11-28 | 21 | Northwestern (9-3) | 22 | 1 | Big Ten (West) |
| 14 | 2017-11-28 | 22 | Virginia Tech (9-3) | 25 | 3 | ACC (Coastal) |
| 14 | 2017-11-28 | 23 | Mississippi State (8-4) | 14 | 9 | SEC (West) |
| 14 | 2017-11-28 | 24 | North Carolina State (8-4) | ACC (Atlantic) | ||
| 14 | 2017-11-28 | 25 | Fresno State (9-3) | MWC (West) | ||
| Wk | Date | Rk | School | Prev | Chng | Conf |
| 13 | 2017-11-21 | 1 | Alabama (11-0) | 1 | SEC (West) | |
| 13 | 2017-11-21 | 2 | Miami (FL) (10-0) | 3 | 1 | ACC (Coastal) |
| 13 | 2017-11-21 | 3 | Clemson (10-1) | 2 | 1 | ACC (Atlantic) |
| 13 | 2017-11-21 | 4 | Oklahoma (10-1) | 4 | Big 12 | |
| 13 | 2017-11-21 | 5 | Wisconsin (11-0) | 5 | Big Ten (West) | |
| 13 | 2017-11-21 | 6 | Auburn (9-2) | 6 | SEC (West) | |
| 13 | 2017-11-21 | 7 | Georgia (10-1) | 7 | SEC (East) | |
| 13 | 2017-11-21 | 8 | Notre Dame (9-2) | 8 | Ind | |
| 13 | 2017-11-21 | 9 | Ohio State (9-2) | 9 | Big Ten (East) | |
| 13 | 2017-11-21 | 10 | Penn State (9-2) | 10 | Big Ten (East) | |
| 13 | 2017-11-21 | 11 | USC (10-2) | 11 | Pac-12 (South) | |
| 13 | 2017-11-21 | 12 | Texas Christian (9-2) | 12 | Big 12 | |
| 13 | 2017-11-21 | 13 | Washington State (9-2) | 14 | 1 | Pac-12 (North) |
| 13 | 2017-11-21 | 14 | Mississippi State (8-3) | 16 | 2 | SEC (West) |
| 13 | 2017-11-21 | 15 | UCF (10-0) | 15 | American (East) | |
| 13 | 2017-11-21 | 16 | Michigan State (8-3) | 17 | 1 | Big Ten (East) |
| 13 | 2017-11-21 | 17 | Washington (9-2) | 18 | 1 | Pac-12 (North) |
| 13 | 2017-11-21 | 18 | LSU (8-3) | 20 | 2 | SEC (West) |
| 13 | 2017-11-21 | 19 | Oklahoma State (8-3) | 13 | 6 | Big 12 |
| 13 | 2017-11-21 | 20 | Memphis (9-1) | 21 | 1 | American (West) |
| 13 | 2017-11-21 | 21 | Stanford (8-3) | 22 | 1 | Pac-12 (North) |
| 13 | 2017-11-21 | 22 | Northwestern (8-3) | 23 | 1 | Big Ten (West) |
| 13 | 2017-11-21 | 23 | Boise State (9-2) | 25 | 2 | MWC (Mountain) |
| 13 | 2017-11-21 | 24 | South Carolina (8-3) | SEC (East) | ||
| 13 | 2017-11-21 | 25 | Virginia Tech (8-3) | ACC (Coastal) | ||
| Wk | Date | Rk | School | Prev | Chng | Conf |
| 12 | 2017-11-14 | 1 | Alabama (10-0) | 2 | 1 | SEC (West) |
| 12 | 2017-11-14 | 2 | Clemson (9-1) | 4 | 2 | ACC (Atlantic) |
| 12 | 2017-11-14 | 3 | Miami (FL) (9-0) | 10 | 7 | ACC (Coastal) |
| 12 | 2017-11-14 | 4 | Oklahoma (9-1) | 5 | 1 | Big 12 |
| 12 | 2017-11-14 | 5 | Wisconsin (10-0) | 9 | 4 | Big Ten (West) |
| 12 | 2017-11-14 | 6 | Auburn (8-2) | 14 | 8 | SEC (West) |
| 12 | 2017-11-14 | 7 | Georgia (9-1) | 1 | 6 | SEC (East) |
| 12 | 2017-11-14 | 8 | Notre Dame (8-2) | 3 | 5 | Ind |
| 12 | 2017-11-14 | 9 | Ohio State (8-2) | 6 | 3 | Big Ten (East) |
| 12 | 2017-11-14 | 10 | Penn State (8-2) | 7 | 3 | Big Ten (East) |
| 12 | 2017-11-14 | 11 | USC (9-2) | 17 | 6 | Pac-12 (South) |
| 12 | 2017-11-14 | 12 | Texas Christian (8-2) | 8 | 4 | Big 12 |
| 12 | 2017-11-14 | 13 | Oklahoma State (8-2) | 11 | 2 | Big 12 |
| 12 | 2017-11-14 | 14 | Washington State (9-2) | 25 | 11 | Pac-12 (North) |
| 12 | 2017-11-14 | 15 | UCF (9-0) | 18 | 3 | American (East) |
| 12 | 2017-11-14 | 16 | Mississippi State (7-3) | 16 | SEC (West) | |
| 12 | 2017-11-14 | 17 | Michigan State (7-3) | 24 | 7 | Big Ten (East) |
| 12 | 2017-11-14 | 18 | Washington (8-2) | 12 | 6 | Pac-12 (North) |
| 12 | 2017-11-14 | 19 | North Carolina State (7-3) | 20 | 1 | ACC (Atlantic) |
| 12 | 2017-11-14 | 20 | LSU (7-3) | 19 | 1 | SEC (West) |
| 12 | 2017-11-14 | 21 | Memphis (8-1) | 23 | 2 | American (West) |
| 12 | 2017-11-14 | 22 | Stanford (7-3) | 21 | 1 | Pac-12 (North) |
| 12 | 2017-11-14 | 23 | Northwestern (7-3) | Big Ten (West) | ||
| 12 | 2017-11-14 | 24 | Michigan (8-2) | Big Ten (East) | ||
| 12 | 2017-11-14 | 25 | Boise State (8-2) | MWC (Mountain) | ||
| Wk | Date | Rk | School | Prev | Chng | Conf |
| 11 | 2017-10-31 | 1 | Georgia (8-0) | 1 | SEC (East) | |
| 11 | 2017-10-31 | 2 | Alabama (8-0) | 2 | SEC (West) | |
| 11 | 2017-10-31 | 3 | Notre Dame (7-1) | 3 | Ind | |
| 11 | 2017-10-31 | 4 | Clemson (7-1) | 4 | ACC (Atlantic) | |
| 11 | 2017-10-31 | 5 | Oklahoma (7-1) | 5 | Big 12 | |
| 11 | 2017-10-31 | 6 | Ohio State (7-1) | 6 | Big Ten (East) | |
| 11 | 2017-10-31 | 7 | Penn State (7-1) | 7 | Big Ten (East) | |
| 11 | 2017-10-31 | 8 | Texas Christian (7-1) | 8 | Big 12 | |
| 11 | 2017-10-31 | 9 | Wisconsin (8-0) | 9 | Big Ten (West) | |
| 11 | 2017-10-31 | 10 | Miami (FL) (7-0) | 10 | ACC (Coastal) | |
| 11 | 2017-10-31 | 11 | Oklahoma State (7-1) | 11 | Big 12 | |
| 11 | 2017-10-31 | 12 | Washington (7-1) | 12 | Pac-12 (North) | |
| 11 | 2017-10-31 | 13 | Virginia Tech (7-1) | 13 | ACC (Coastal) | |
| 11 | 2017-10-31 | 14 | Auburn (6-2) | 14 | SEC (West) | |
| 11 | 2017-10-31 | 15 | Iowa State (6-2) | 15 | Big 12 | |
| 11 | 2017-10-31 | 16 | Mississippi State (6-2) | 16 | SEC (West) | |
| 11 | 2017-10-31 | 17 | USC (7-2) | 17 | Pac-12 (South) | |
| 11 | 2017-10-31 | 18 | UCF (7-0) | 18 | American (East) | |
| 11 | 2017-10-31 | 19 | LSU (6-2) | 19 | SEC (West) | |
| 11 | 2017-10-31 | 20 | North Carolina State (6-2) | 20 | ACC (Atlantic) | |
| 11 | 2017-10-31 | 21 | Stanford (6-2) | 21 | Pac-12 (North) | |
| 11 | 2017-10-31 | 22 | Arizona (6-2) | 22 | Pac-12 (South) | |
| 11 | 2017-10-31 | 23 | Memphis (7-1) | 23 | American (West) | |
| 11 | 2017-10-31 | 24 | Michigan State (6-2) | 24 | Big Ten (East) | |
| 11 | 2017-10-31 | 25 | Washington State (7-2) | 25 | Pac-12 (North) | |
| Wk | Date | Rk | School | Prev | Chng | Conf |
| 10 | 2017-10-31 | 1 | Georgia (8-0) | SEC (East) | ||
| 10 | 2017-10-31 | 2 | Alabama (8-0) | SEC (West) | ||
| 10 | 2017-10-31 | 3 | Notre Dame (7-1) | Ind | ||
| 10 | 2017-10-31 | 4 | Clemson (7-1) | ACC (Atlantic) | ||
| 10 | 2017-10-31 | 5 | Oklahoma (7-1) | Big 12 | ||
| 10 | 2017-10-31 | 6 | Ohio State (7-1) | Big Ten (East) | ||
| 10 | 2017-10-31 | 7 | Penn State (7-1) | Big Ten (East) | ||
| 10 | 2017-10-31 | 8 | Texas Christian (7-1) | Big 12 | ||
| 10 | 2017-10-31 | 9 | Wisconsin (8-0) | Big Ten (West) | ||
| 10 | 2017-10-31 | 10 | Miami (FL) (7-0) | ACC (Coastal) | ||
| 10 | 2017-10-31 | 11 | Oklahoma State (7-1) | Big 12 | ||
| 10 | 2017-10-31 | 12 | Washington (7-1) | Pac-12 (North) | ||
| 10 | 2017-10-31 | 13 | Virginia Tech (7-1) | ACC (Coastal) | ||
| 10 | 2017-10-31 | 14 | Auburn (6-2) | SEC (West) | ||
| 10 | 2017-10-31 | 15 | Iowa State (6-2) | Big 12 | ||
| 10 | 2017-10-31 | 16 | Mississippi State (6-2) | SEC (West) | ||
| 10 | 2017-10-31 | 17 | USC (7-2) | Pac-12 (South) | ||
| 10 | 2017-10-31 | 18 | UCF (7-0) | American (East) | ||
| 10 | 2017-10-31 | 19 | LSU (6-2) | SEC (West) | ||
| 10 | 2017-10-31 | 20 | North Carolina State (6-2) | ACC (Atlantic) | ||
| 10 | 2017-10-31 | 21 | Stanford (6-2) | Pac-12 (North) | ||
| 10 | 2017-10-31 | 22 | Arizona (6-2) | Pac-12 (South) | ||
| 10 | 2017-10-31 | 23 | Memphis (7-1) | American (West) | ||
| 10 | 2017-10-31 | 24 | Michigan State (6-2) | Big Ten (East) | ||
| 10 | 2017-10-31 | 25 | Washington State (7-2) | Pac-12 (North) |
AP Polls