| 1) | Dunn, Kyle | Arkansas | 51.26 (04/25-04/28) | 51.28 (05/04) | 51.30 (05/10-05/13) | 51.37 (04/14) | 51.70 (04/20-04/21) | 52.11 (03/30-03/31) | 52.15 (05/10-05/13) | |
| 2) | Hopkins, J | Washington St. | 51.26 (04/28) | 51.43 (04/19-04/21) | 51.52 (03/31) | 51.52 (03/31) | 51.56 (05/12-05/13) | 51.57 (05/12-05/13) | 51.80 (03/23-03/24) | 52.38 (04/06-04/07) |