Week 4 Football Top 25 Rankings
September 27, 2015 · CSM Staff
| Rank | Team | Record | Next Opponent | Prior | |
| 1 |  |
Ohio State | 4-0, 0-0 | at Indiana | 1 |
| 2 |  |
Michigan State | 4-0, 0-0 | Purdue | 2 |
| 3 |  |
TCU | 4-0, 1-0 | Texas | 3 |
| 4 |  |
Baylor | 3-0, 0-0 | Texas Tech | 4 |
| 5 |  |
Mississippi | 4-0, 2-0 | at Florida | 5 |
| 6 |  |
UCLA | 4-0, 1-0 | Arizona State | 7 |
| 7 |  |
Clemson | 3-0, 1-0 | Notre Dame | 6 |
| 8 |  |
Georgia | 4-0, 1-0 | Alabama | 8 |
| 9 |  |
Notre Dame | 4-0 | at Clemson | 9 |
| 10 |  |
Alabama | 3-1, 0-1 | at Georgia | 10 |
| 11 |  |
LSU | 3-0, 1-0 | Eastern Michigan | 11 |
| 12 |  |
Utah | 4-0, 1-0 | bye | 17 |
| 13 |  |
Florida State | 3-0, 0-0 | at Wake Forest | 13 |
| 14 |  |
USC | 3-1, 1-1 | bye | 14 |
| 15 |  |
Oklahoma | 3-0, 0-0 | West Virginia | 15 |
| 16 |  |
Texas A&M | 4-0, 1-0 | Mississippi State | 19 |
| 17 |  |
Wisconsin | 3-1, 0-0 | Iowa | 18 |
| 18 |  |
Oklahoma State | 4-0, 1-0 | Kansas State | 20 |
| 19 |  |
Northwestern | 4-0, 0-0 | Minnesota | 24 |
| 20 |  |
Oregon | 2-2, 0-1 | at Colorado | 12 |
| 21 |  |
Stanford | 3-1, 2-0 | Arizona | NR |
| 22 |  |
Arizona | 3-1, 0-1 | at Stanford | 16 |
| 23 |  |
Mississippi State | 3-1, 1-1 | at Texas A&M | NR |
| 24 |  |
West Virginia | 3-0, 0-0 | at Oklahoma | NR |
| 25 |  |
California | 4-0, 1-0 | Washington State | NR |
at Duke
