| WEEK 1 | WEEK 2 | WEEK 3 | WEEK 4 | WEEK 5 | WEEK 6 | WEEK 7 | WEEK 8 | WEEK 9 | WEEK 10 | WEEK 11 | WEEK 12 | WEEK 13 | |
| 1 | Arizona | Arizona | Arizona | Arizona | Arizona | Arizona | Arizona | Arizona | Arizona | Arizona | Arizona | Arizona | Fresno State |
| 2 | Fresno State | Washington | Michigan | Michigan | Michigan | Michigan | Michigan | Michigan | Michigan | Michigan | Michigan | Michigan | Arizona |
| 3 | Washington | Michigan | Washington | Washington | Washington | Washington | Fresno State | Fresno State | Fresno State | Washington | Fresno State | Fresno State | Washington |
| 4 | Michigan | Fresno State | Oklahoma State | Oklahoma State | Oklahoma State | Fresno State | Oklahoma | Washington | Washington | Fresno State | Washington | Washington | Oklahoma State |
| 5 | Iowa | South Florida | Fresno State | Fresno State | Fresno State | Oklahoma | Washington | Oklahoma | Oklahoma | Oklahoma | South Florida | Nebraska | Nebraska |
| 6 | South Carolina | Oklahoma | Oklahoma | Oklahoma | Oklahoma | Texas | South Florida | South Florida | South Florida | South Florida | Oklahoma | South Florida | Michigan |
| 7 | California | Arizona State | South Florida | South Florida | Hawaii | Arizona State | Arizona State | Nebraska | Nebraska | Nebraska | (tie) Nebraska | Oklahoma | Texas |
| 8 | Colorado State | California | Arizona State | Arizona State | Arizona State | Missouri | Nebraska | Oklahoma State | Texas | Texas | Texas | Texas | South Florida |
| 9 | Kansas | Oklahoma State | Missouri | Missouri | Missouri | South Florida | Texas | Texas | Hawaii | Stanford | Stanford | Stanford | Massachusetts |
| 10 | South Florida | (tie) Florida State | Long Beach State | Long Beach State | South Florida | Oklahoma State | Oklahoma State | (tie) Arizona State | Oklahoma State | LSU | LSU | Hawaii | DePaul |
| 11 | Oklahoma State | South Carolina | Hawaii | Hawaii | Texas | Hawaii | Missouri | Hawaii | LSU | Hawaii | Oklahoma State | DePaul | Oklahoma State |
| 12 | Massachusetts | Missouri | Florida State | Oregon State | Nebraska | Nebraska | Hawaii | Stanford | Stanford | Oklahoma State | Hawaii | LSU | Stanford |
| 13 | Missouri | Long Beach State | California | Nebraska | Long Beach State | Long Beach State | Stanford | LSU | (tie) Arizona State | Arizona State | DePaul | Oklahoma State | LSU |
| 14 | Long Beach State | Iowa | South Carolina | Iowa | Stanford | Stanford | LSU | Missouri | Florida State | Long Beach State | Long Beach State | Florida State | Hawaii |
| 15 | Cal State-Northridge | Hawaii | Nebraska | Stanford | LSU | Iowa | Long Beach State | Florida State | Missouri | DePaul | Arizona State | Long Beach State | Arizona State |
| 16 | Oklahoma | Kansas | Iowa | LSU | Iowa | LSU | Florida State | Minnesota | Minnesota | Florida State | Florida State | Arizona State | Minnesota |
| 17 | UCLA | Stanford | Stanford | Florida State | Florida State | Florida State | California | Oregon | Long Beach State | Texas Tech | Texas Tech | Texas Tech | Florida State |
| 18 | Utah | Minnesota | Cal State-Northridge | Texas | Oregon State | Oregon State | Minnesota | Long Beach State | Oregon State | Missouri | Iowa | Cal State-Northridge | Long Beach State |
| 19 | Southwestern Louisiana | Colorado State | LSU | Cal State-Northridge | Oregon | California | Texas Tech | Texas Tech | Texas Tech | California | Cal State-Northridge | Iowa | Iowa |
| 20 | Central Michigan | LSU | Oregon State | Minnesota | Minnesota | Minnesota | Iowa | California | (tie) DePaul | Iowa | Illinois-Chicago | Illinois-Chicago | Oregon |
| 21 | Florida State | DePaul | Minnesota | South Carolina | California | Cal State-Northridge | Oregon | Oregon State | California | Minnesota | California | Massachusetts | Illinois-Chicago |
| 22 | Michigan State | Texas A&M | Kansas | California | Cal State-Northridge | Oregon State | Oregon State | Iowa | Iowa | Oregon State | Missouri | Minnesota | California |
| 23 | Arizona State | Oregon State | Colorado State | Oregon State | Texas Tech | Texas Tech | Southwestern Louisiana | Illinois-Chicago | Oregon | Cal State-Northridge | Minnesota | Florida | Cal State-Northridge |
| 24 | DePaul | Cal State-Northridge | DePaul | (tie) Southwestern Louisiana | Southwestern Louisiana | DePaul | Illinois-Chicago | Southwestern Louisiana | Illinois-Chicago | Illinois-Chicago | Massachusetts | California | Texas Tech |
| 25 | Tennessee | Utah | Southwestern Louisiana | DePaul | Florida | Southwestern Louisiana | Michigan State | Cal-State Northridge | Cal State-Northridge | Oregon | Florida | Missouri | Florida |
| Southwestern Louisiana | |||||||||||||