CFB Playoff Rankings
| Wk | Date | Rk | School | Prev | Chng | Conf |
|---|---|---|---|---|---|---|
| 15 | Final | 1 | Alabama (13-0) | 1 | SEC (West) | |
| 15 | Final | 2 | Clemson (13-0) | 2 | ACC (Atlantic) | |
| 15 | Final | 3 | Notre Dame (12-0) | 3 | Ind | |
| 15 | Final | 4 | Oklahoma (12-1) | 5 | 1 | Big 12 |
| 15 | Final | 5 | Georgia (11-2) | 4 | 1 | SEC (East) |
| 15 | Final | 6 | Ohio State (12-1) | 6 | Big Ten (East) | |
| 15 | Final | 7 | Michigan (10-2) | 7 | Big Ten (East) | |
| 15 | Final | 8 | UCF (12-0) | 8 | American (East) | |
| 15 | Final | 9 | Washington (10-3) | 11 | 2 | Pac-12 (North) |
| 15 | Final | 10 | Florida (9-3) | 9 | 1 | SEC (East) |
| 15 | Final | 11 | LSU (9-3) | 10 | 1 | SEC (West) |
| 15 | Final | 12 | Penn State (9-3) | 12 | Big Ten (East) | |
| 15 | Final | 13 | Washington State (10-2) | 13 | Pac-12 (North) | |
| 15 | Final | 14 | Kentucky (9-3) | 15 | 1 | SEC (East) |
| 15 | Final | 15 | Texas (9-4) | 14 | 1 | Big 12 |
| 15 | Final | 16 | West Virginia (8-3) | 16 | Big 12 | |
| 15 | Final | 17 | Utah (9-4) | 17 | Pac-12 (South) | |
| 15 | Final | 18 | Mississippi State (8-4) | 18 | SEC (West) | |
| 15 | Final | 19 | Texas A&M (8-4) | 19 | SEC (West) | |
| 15 | Final | 20 | Syracuse (9-3) | 20 | ACC (Atlantic) | |
| 15 | Final | 21 | Fresno State (11-2) | 25 | 4 | MWC (West) |
| 15 | Final | 22 | Northwestern (8-5) | 21 | 1 | Big Ten (West) |
| 15 | Final | 23 | Missouri (8-4) | 24 | 1 | SEC (East) |
| 15 | Final | 24 | Iowa State (8-4) | 23 | 1 | Big 12 |
| 15 | Final | 25 | Boise State (10-3) | 22 | 3 | MWC (Mountain) |
| Wk | Date | Rk | School | Prev | Chng | Conf |
| 14 | 2018-11-27 | 1 | Alabama (12-0) | 1 | SEC (West) | |
| 14 | 2018-11-27 | 2 | Clemson (12-0) | 2 | ACC (Atlantic) | |
| 14 | 2018-11-27 | 3 | Notre Dame (12-0) | 3 | Ind | |
| 14 | 2018-11-27 | 4 | Georgia (11-1) | 5 | 1 | SEC (East) |
| 14 | 2018-11-27 | 5 | Oklahoma (11-1) | 6 | 1 | Big 12 |
| 14 | 2018-11-27 | 6 | Ohio State (11-1) | 10 | 4 | Big Ten (East) |
| 14 | 2018-11-27 | 7 | Michigan (10-2) | 4 | 3 | Big Ten (East) |
| 14 | 2018-11-27 | 8 | UCF (11-0) | 9 | 1 | American (East) |
| 14 | 2018-11-27 | 9 | Florida (9-3) | 11 | 2 | SEC (East) |
| 14 | 2018-11-27 | 10 | LSU (9-3) | 7 | 3 | SEC (West) |
| 14 | 2018-11-27 | 11 | Washington (9-3) | 16 | 5 | Pac-12 (North) |
| 14 | 2018-11-27 | 12 | Penn State (9-3) | 12 | Big Ten (East) | |
| 14 | 2018-11-27 | 13 | Washington State (10-2) | 8 | 5 | Pac-12 (North) |
| 14 | 2018-11-27 | 14 | Texas (9-3) | 14 | Big 12 | |
| 14 | 2018-11-27 | 15 | Kentucky (9-3) | 15 | SEC (East) | |
| 14 | 2018-11-27 | 16 | West Virginia (8-3) | 13 | 3 | Big 12 |
| 14 | 2018-11-27 | 17 | Utah (9-3) | 17 | Pac-12 (South) | |
| 14 | 2018-11-27 | 18 | Mississippi State (8-4) | 18 | SEC (West) | |
| 14 | 2018-11-27 | 19 | Texas A&M (8-4) | 22 | 3 | SEC (West) |
| 14 | 2018-11-27 | 20 | Syracuse (9-3) | 20 | ACC (Atlantic) | |
| 14 | 2018-11-27 | 21 | Northwestern (8-4) | 19 | 2 | Big Ten (West) |
| 14 | 2018-11-27 | 22 | Boise State (10-2) | 23 | 1 | MWC (Mountain) |
| 14 | 2018-11-27 | 23 | Iowa State (7-4) | 25 | 2 | Big 12 |
| 14 | 2018-11-27 | 24 | Missouri (8-4) | SEC (East) | ||
| 14 | 2018-11-27 | 25 | Fresno State (10-2) | MWC (West) | ||
| Wk | Date | Rk | School | Prev | Chng | Conf |
| 13 | 2018-11-20 | 1 | Alabama (11-0) | 1 | SEC (West) | |
| 13 | 2018-11-20 | 2 | Clemson (11-0) | 2 | ACC (Atlantic) | |
| 13 | 2018-11-20 | 3 | Notre Dame (11-0) | 3 | Ind | |
| 13 | 2018-11-20 | 4 | Michigan (10-1) | 4 | Big Ten (East) | |
| 13 | 2018-11-20 | 5 | Georgia (10-1) | 5 | SEC (East) | |
| 13 | 2018-11-20 | 6 | Oklahoma (10-1) | 6 | Big 12 | |
| 13 | 2018-11-20 | 7 | LSU (9-2) | 7 | SEC (West) | |
| 13 | 2018-11-20 | 8 | Washington State (10-1) | 8 | Pac-12 (North) | |
| 13 | 2018-11-20 | 9 | UCF (10-0) | 11 | 2 | American (East) |
| 13 | 2018-11-20 | 10 | Ohio State (10-1) | 10 | Big Ten (East) | |
| 13 | 2018-11-20 | 11 | Florida (8-3) | 13 | 2 | SEC (East) |
| 13 | 2018-11-20 | 12 | Penn State (8-3) | 14 | 2 | Big Ten (East) |
| 13 | 2018-11-20 | 13 | West Virginia (8-2) | 9 | 4 | Big 12 |
| 13 | 2018-11-20 | 14 | Texas (8-3) | 15 | 1 | Big 12 |
| 13 | 2018-11-20 | 15 | Kentucky (8-3) | 17 | 2 | SEC (East) |
| 13 | 2018-11-20 | 16 | Washington (8-3) | 18 | 2 | Pac-12 (North) |
| 13 | 2018-11-20 | 17 | Utah (8-3) | 19 | 2 | Pac-12 (South) |
| 13 | 2018-11-20 | 18 | Mississippi State (7-4) | 21 | 3 | SEC (West) |
| 13 | 2018-11-20 | 19 | Northwestern (7-4) | 22 | 3 | Big Ten (West) |
| 13 | 2018-11-20 | 20 | Syracuse (8-3) | 12 | 8 | ACC (Atlantic) |
| 13 | 2018-11-20 | 21 | Utah State (10-1) | 23 | 2 | MWC (Mountain) |
| 13 | 2018-11-20 | 22 | Texas A&M (7-4) | SEC (West) | ||
| 13 | 2018-11-20 | 23 | Boise State (9-2) | 25 | 2 | MWC (Mountain) |
| 13 | 2018-11-20 | 24 | Pitt (7-4) | ACC (Coastal) | ||
| 13 | 2018-11-20 | 25 | Iowa State (6-4) | 16 | 9 | Big 12 |
| Wk | Date | Rk | School | Prev | Chng | Conf |
| 12 | 2018-11-13 | 1 | Alabama (10-0) | 1 | SEC (West) | |
| 12 | 2018-11-13 | 2 | Clemson (10-0) | 2 | ACC (Atlantic) | |
| 12 | 2018-11-13 | 3 | Notre Dame (10-0) | 3 | Ind | |
| 12 | 2018-11-13 | 4 | Michigan (9-1) | 4 | Big Ten (East) | |
| 12 | 2018-11-13 | 5 | Georgia (9-1) | 5 | SEC (East) | |
| 12 | 2018-11-13 | 6 | Oklahoma (9-1) | 6 | Big 12 | |
| 12 | 2018-11-13 | 7 | LSU (8-2) | 7 | SEC (West) | |
| 12 | 2018-11-13 | 8 | Washington State (9-1) | 8 | Pac-12 (North) | |
| 12 | 2018-11-13 | 9 | West Virginia (8-1) | 9 | Big 12 | |
| 12 | 2018-11-13 | 10 | Ohio State (9-1) | 10 | Big Ten (East) | |
| 12 | 2018-11-13 | 11 | UCF (9-0) | 12 | 1 | American (East) |
| 12 | 2018-11-13 | 12 | Syracuse (8-2) | 13 | 1 | ACC (Atlantic) |
| 12 | 2018-11-13 | 13 | Florida (7-3) | 15 | 2 | SEC (East) |
| 12 | 2018-11-13 | 14 | Penn State (7-3) | 20 | 6 | Big Ten (East) |
| 12 | 2018-11-13 | 15 | Texas (7-3) | 19 | 4 | Big 12 |
| 12 | 2018-11-13 | 16 | Iowa State (6-3) | 22 | 6 | Big 12 |
| 12 | 2018-11-13 | 17 | Kentucky (7-3) | 11 | 6 | SEC (East) |
| 12 | 2018-11-13 | 18 | Washington (7-3) | 25 | 7 | Pac-12 (North) |
| 12 | 2018-11-13 | 19 | Utah (7-3) | Pac-12 (South) | ||
| 12 | 2018-11-13 | 20 | Boston College (7-3) | 17 | 3 | ACC (Atlantic) |
| 12 | 2018-11-13 | 21 | Mississippi State (6-4) | 16 | 5 | SEC (West) |
| 12 | 2018-11-13 | 22 | Northwestern (6-4) | Big Ten (West) | ||
| 12 | 2018-11-13 | 23 | Utah State (9-1) | MWC (Mountain) | ||
| 12 | 2018-11-13 | 24 | Cincinnati (9-1) | American (East) | ||
| 12 | 2018-11-13 | 25 | Boise State (8-2) | MWC (Mountain) | ||
| Wk | Date | Rk | School | Prev | Chng | Conf |
| 11 | 2018-11-06 | 1 | Alabama (9-0) | 1 | SEC (West) | |
| 11 | 2018-11-06 | 2 | Clemson (9-0) | 2 | ACC (Atlantic) | |
| 11 | 2018-11-06 | 3 | Notre Dame (9-0) | 4 | 1 | Ind |
| 11 | 2018-11-06 | 4 | Michigan (8-1) | 5 | 1 | Big Ten (East) |
| 11 | 2018-11-06 | 5 | Georgia (8-1) | 6 | 1 | SEC (East) |
| 11 | 2018-11-06 | 6 | Oklahoma (8-1) | 7 | 1 | Big 12 |
| 11 | 2018-11-06 | 7 | LSU (7-2) | 3 | 4 | SEC (West) |
| 11 | 2018-11-06 | 8 | Washington State (8-1) | 8 | Pac-12 (North) | |
| 11 | 2018-11-06 | 9 | West Virginia (7-1) | 13 | 4 | Big 12 |
| 11 | 2018-11-06 | 10 | Ohio State (8-1) | 10 | Big Ten (East) | |
| 11 | 2018-11-06 | 11 | Kentucky (7-2) | 9 | 2 | SEC (East) |
| 11 | 2018-11-06 | 12 | UCF (8-0) | 12 | American (East) | |
| 11 | 2018-11-06 | 13 | Syracuse (7-2) | 19 | 6 | ACC (Atlantic) |
| 11 | 2018-11-06 | 14 | North Carolina State (6-2) | 21 | 7 | ACC (Atlantic) |
| 11 | 2018-11-06 | 15 | Florida (6-3) | 11 | 4 | SEC (East) |
| 11 | 2018-11-06 | 16 | Mississippi State (6-3) | 18 | 2 | SEC (West) |
| 11 | 2018-11-06 | 17 | Boston College (7-2) | 22 | 5 | ACC (Atlantic) |
| 11 | 2018-11-06 | 18 | Michigan State (6-3) | Big Ten (East) | ||
| 11 | 2018-11-06 | 19 | Texas (6-3) | 17 | 2 | Big 12 |
| 11 | 2018-11-06 | 20 | Penn State (6-3) | 14 | 6 | Big Ten (East) |
| 11 | 2018-11-06 | 21 | Iowa (6-3) | 16 | 5 | Big Ten (West) |
| 11 | 2018-11-06 | 22 | Iowa State (5-3) | 24 | 2 | Big 12 |
| 11 | 2018-11-06 | 23 | Fresno State (8-1) | 23 | MWC (West) | |
| 11 | 2018-11-06 | 24 | Auburn (6-3) | SEC (West) | ||
| 11 | 2018-11-06 | 25 | Washington (7-3) | Pac-12 (North) | ||
| Wk | Date | Rk | School | Prev | Chng | Conf |
| 10 | 2018-10-30 | 1 | Alabama (8-0) | SEC (West) | ||
| 10 | 2018-10-30 | 2 | Clemson (8-0) | ACC (Atlantic) | ||
| 10 | 2018-10-30 | 3 | LSU (7-1) | SEC (West) | ||
| 10 | 2018-10-30 | 4 | Notre Dame (8-0) | Ind | ||
| 10 | 2018-10-30 | 5 | Michigan (7-1) | Big Ten (East) | ||
| 10 | 2018-10-30 | 6 | Georgia (7-1) | SEC (East) | ||
| 10 | 2018-10-30 | 7 | Oklahoma (7-1) | Big 12 | ||
| 10 | 2018-10-30 | 8 | Washington State (7-1) | Pac-12 (North) | ||
| 10 | 2018-10-30 | 9 | Kentucky (7-1) | SEC (East) | ||
| 10 | 2018-10-30 | 10 | Ohio State (7-1) | Big Ten (East) | ||
| 10 | 2018-10-30 | 11 | Florida (6-2) | SEC (East) | ||
| 10 | 2018-10-30 | 12 | UCF (7-0) | American (East) | ||
| 10 | 2018-10-30 | 13 | West Virginia (6-1) | Big 12 | ||
| 10 | 2018-10-30 | 14 | Penn State (6-2) | Big Ten (East) | ||
| 10 | 2018-10-30 | 15 | Utah (6-2) | Pac-12 (South) | ||
| 10 | 2018-10-30 | 16 | Iowa (6-2) | Big Ten (West) | ||
| 10 | 2018-10-30 | 17 | Texas (6-2) | Big 12 | ||
| 10 | 2018-10-30 | 18 | Mississippi State (5-3) | SEC (West) | ||
| 10 | 2018-10-30 | 19 | Syracuse (6-2) | ACC (Atlantic) | ||
| 10 | 2018-10-30 | 20 | Texas A&M (5-3) | SEC (West) | ||
| 10 | 2018-10-30 | 21 | North Carolina State (5-2) | ACC (Atlantic) | ||
| 10 | 2018-10-30 | 22 | Boston College (6-2) | ACC (Atlantic) | ||
| 10 | 2018-10-30 | 23 | Fresno State (7-1) | MWC (West) | ||
| 10 | 2018-10-30 | 24 | Iowa State (4-3) | Big 12 | ||
| 10 | 2018-10-30 | 25 | Virginia (6-2) | ACC (Coastal) |
AP Polls