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. Minnesota (4 - 0) Schedule: 5.727 (5) | 8.979 8.979  | |||
| 2. Ohio State (3 - 0) Schedule: 5.985 (3) | 8.108 8.108  | |||
| 3. Purdue (3 - 0) Schedule: 4.569 (8) | 7.556 7.556  | |||
| 4. Wisconsin (4 - 0) Schedule: 4.584 (7) | 7.362 7.362  | |||
| 5. Michigan (3 - 1) Schedule: 5.902 (4) | 7.198 7.198  | |||
| 6. Northwestern (1 - 3) Schedule: 7.88 (1) | 6.478 6.478  | |||
| 7. Iowa (2 - 2) Schedule: 6.254 (2) | 6.085 6.085  | |||
| 8. Penn State (2 - 2) Schedule: 5.247 (6) | 5.657 5.657  | |||
| 9. Michigan St (2 - 2) Schedule: 4.302 (9) | 5.025 5.025  | |||
| 10. Indiana (2 - 2) Schedule: 4.018 (11) | 4.171 4.171  | |||
| 11. Illinois (2 - 2) Schedule: 4.265 (10) | 4.092 4.092  |