Big Ten rankings · National FBS rankings · All teams
| Date | H/A | Opponent | Tier:Conf | Result | Score | Notes |
|---|---|---|---|---|---|---|
| 9/3 | H | Colorado St (3-9) | [G5:MWC] | W | 51-7 | |
| 9/10 | H | Hawai'i (3-10) | [G5:MWC] | W | 56-10 | |
| 9/17 | H | UConn (6-6) | [G5:Ind] | W | 59-0 | |
| 9/24 | H | Maryland (7-5) | [P4:Big Ten] | W | 34-27 | |
| 10/1 | A | Iowa (7-5) | [P4:Big Ten] | W | 27-14 | |
| 10/8 | A | Indiana (4-8) | [P4:Big Ten] | W | 31-10 | |
| 10/15 | H | Penn State (10-2) | [P4:Big Ten] | W | 41-17 | |
| 10/29 | H | Michigan St (5-7) | [P4:Big Ten] | W | 29-7 | |
| 11/5 | A | Rutgers (4-8) | [P4:Big Ten] | W | 52-17 | |
| 11/12 | H | Nebraska (4-8) | [P4:Big Ten] | W | 34-3 | |
| 11/19 | H | Illinois (8-4) | [P4:Big Ten] | W | 19-17 | |
| 11/26 | A | Ohio State (11-1) | [P4:Big Ten] | W | 45-23 | |
| 12/3 | N | Purdue (8-5) | [P4:Big Ten] | W | 43-22 | Big Ten Championship Game |
| 12/31 | N | TCU (12-1) | [P4:Big 12] | L | 45-51 | CFP Semifinal at the Vrbo Fiesta Bowl * |
* game does not count in Harbin ratings