| 1) Iowa | 3:07.58 (02/20) | 3:07.24 (02/26) | 3:10.04 (02/05) | 3:10.82 (01/29) | 3:11.33 (02/12) | 3:12.40 (01/23) | 3:12.82 (01/09) | 3:12.99 (01/15) |
| 2) Akron | 3:07.58 (02/26) | 3:11.17 (02/12) | 3:14.42 (01/29) | 3:17.33 (02/05) | 3:17.43 (01/16) | 3:20.13 (02/19) | 3:22.97 (01/22) |