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 | Big 10 | Big 12 | Big East | Conference USA | Division I-A Independents | Mid-American Conference | MWC | Pac-12 | SEC | Sun Belt Conference | WAC
| Place | Team | Rating | Strength of Schedule | +/- | 
|---|---|---|---|---|
| 1. Michigan (3 - 1) Schedule: 6.594 (3) | 8.663 8.663  | |||
| 2. Illinois (3 - 1) Schedule: 6.823 (2) | 8.195 8.195  | |||
| 3. Northwestern (3 - 0) Schedule: 5.189 (9) | 7.482 7.482  | |||
| 4. Ohio State (2 - 1) Schedule: 5.974 (7) | 7.175 7.175  | |||
| 5. Wisconsin (3 - 2) Schedule: 6.153 (6) | 7.103 7.103  | |||
| 6. Purdue (3 - 0) Schedule: 5.037 (10) | 7.049 7.049  | |||
| 7. Michigan St (2 - 1) Schedule: 5.842 (8) | 6.996 6.996  | |||
| 8. Iowa (3 - 0) Schedule: 4.332 (11) | 6.931 6.931  | |||
| 9. Minnesota (1 - 2) Schedule: 6.494 (4) | 5.967 5.967  | |||
| 10. Penn State (0 - 3) Schedule: 7.344 (1) | 4.527 4.527  | |||
| 11. Indiana (0 - 3) Schedule: 6.172 (5) | 3.689 3.689  |