| 1) | Rickels, Keaton | Iowa | 51.16 (05/10-05/12) | 51.60 (04/20) | 52.28 (04/24-04/27) | 52.92 (04/06) | 53.12 (05/10-05/12) | 53.56 (03/22-03/23) | 1:00.73 (04/11-04/13) | |
| 2) | Ray, Zachary | Boston U. | 51.16 (03/14-03/16) | 51.75 (03/27-03/30) | 52.25 (03/27-03/30) | 52.29 (05/10-05/12) | 52.65 (04/04-04/06) | 53.49 (04/25-04/27) | 53.49 (05/03) | 53.59 (05/10-05/12) |