| 1) California | 46.51 (03/25) | 46.51 (03/25) | 46.65 (04/09) | 46.65 (04/09) | 47.10 (03/18) | 47.10 (03/18) | 47.15 (03/05) | 47.15 (04/23) |
| 2) Rhode Island | 46.51 (05/13) | 46.51 (05/13) | 46.87 (05/07) | 46.87 (05/07) | 46.88 (04/22) | 46.88 (04/22) | 46.94 (04/30) | 46.94 (04/30) |
| 3) UL-Monroe | 46.51 (05/13) | 46.51 (05/13) | 46.98 (04/08) | 46.98 (04/08) | 46.99 (03/25) | 46.99 (03/25) | 47.29 (04/23) | 47.29 (04/23) |
| 4) Wayland Baptist | 46.51 (04/08) | 47.40 (05/26) |