Week 4
2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2021 | 2022 | 2023 | 2024 | 2025
All | ACC | American Athletic Conference | Big 10 | Big 12 | Conference USA | Division I-A Independents | Mid-American Conference | MWC | Pac-12 | SEC | Sun Belt Conference
| Place | Team | Rating | Strength of Schedule | +/- | 
|---|---|---|---|---|
| 1. Wisconsin (3 - 0) Schedule: 4.639 (4) | 8.426 8.426  | |||
| 2. Ohio State (4 - 0) Schedule: 4.33 (7) | 8.13 8.13  | |||
| 3. Michigan St (3 - 1) Schedule: 5.08 (1) | 7.671 7.671  | |||
| 4. Iowa (3 - 0) Schedule: 4.333 (6) | 7.234 7.234  | |||
| 5. Penn State (3 - 0) Schedule: 4.07 (8) | 7.114 7.114  | |||
| 6. Nebraska (3 - 1) Schedule: 3.842 (10) | 5.434 5.434  | |||
| 7. Michigan (2 - 1) Schedule: 4.99 (2) | 5.078 5.078  | |||
| 8. Minnesota (3 - 0) Schedule: 3.988 (9) | 5.032 5.032  | |||
| 9. Maryland (2 - 1) Schedule: 2.598 (13) | 4.869 4.869  | |||
| 10. Purdue (1 - 2) Schedule: 4.777 (3) | 4.106 4.106  | |||
| 11. Indiana (3 - 1) Schedule: 2.575 (14) | 3.862 3.862  | |||
| 12. Northwestern (1 - 2) Schedule: 4.621 (5) | 3.466 3.466  | |||
| 13. Illinois (2 - 2) Schedule: 2.675 (12) | 3.439 3.439  | |||
| 14. Rutgers (1 - 2) Schedule: 3.427 (11) | 2.478 2.478  |