| 1) | Grosvenor, Grant | Montana State | 1:49.50 (05/09) | 1:50.25 (05/04) | 1:51.26 (04/17-04/19) | 1:53.90 (05/14-05/17) | 1:54.38 (04/11) | 1:55.65 (05/14-05/17) | 1:56.64 (04/26) | 2:01.43 (03/28-03/29) |
| 2) | Butler, Seth | Colorado St. | 1:49.50 (04/25-04/26) | 1:51.28 (05/14-05/17) | 1:51.55 (05/03) | 1:52.00 (04/11-04/12) | 1:52.22 (05/14-05/17) | 1:52.28 (04/19) | 1:53.52 (04/17-04/19) |