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 (4 - 0) Schedule: 6.19 (2) | 9.587 9.587  | |||
| 2. Ohio State (4 - 0) Schedule: 5.811 (3) | 9.526 9.526  | |||
| 3. Iowa (4 - 0) Schedule: 5.021 (5) | 7.761 7.761  | |||
| 4. Penn State (2 - 2) Schedule: 7.135 (1) | 6.969 6.969  | |||
| 5. Michigan St (3 - 1) Schedule: 4.825 (6) | 6.54 6.54  | |||
| 6. Wisconsin (3 - 1) Schedule: 3.596 (9) | 5.683 5.683  | |||
| 7. Minnesota (2 - 2) Schedule: 4.669 (8) | 5.541 5.541  | |||
| 8. Indiana (2 - 2) Schedule: 4.704 (7) | 4.826 4.826  | |||
| 9. Purdue (4 - 0) Schedule: 3.076 (11) | 4.613 4.613  | |||
| 10. Illinois (1 - 3) Schedule: 5.586 (4) | 4.109 4.109  | |||
| 11. Northwestern (2 - 2) Schedule: 3.514 (10) | 3.852 3.852  |