| 1) | Rivera, Jesus | Arizona State | 1:51.05 (04/11-04/12) | 1:51.16 (05/03) | 1:51.46 (03/21-03/22) | 1:51.92 (05/10) | 1:52.06 (03/28-03/29) | 1:54.65 (04/17-04/19) |
| 2) | Holtmeier, Jacob | Nebraska | 1:51.05 (05/03) | 1:51.71 (04/19) | 1:51.94 (05/10) | 1:52.17 (04/17-04/19) | 1:54.75 (05/16-05/18) | 1:56.04 (03/29) |