| 1) | Mellon, Zach | Wisconsin | 1:49.41 (05/11-05/13) | 1:49.81 (04/29) | 1:50.09 (04/19-04/21) | |||||
| 2) | Hilbert, Gabe | Long Beach St. | 1:49.41 (04/28-04/29) | 1:50.19 (05/11-05/12) | 1:51.11 (04/06-04/07) | 1:51.27 (04/13) | 1:51.45 (04/19-04/21) | 1:53.03 (03/31-04/01) | 1:53.29 (03/31-04/01) | 1:58.54 (05/11-05/12) |