| 1) Tarleton State | 46.80 (04/09) | 46.00 (03/03) | 46.29 (05/05) | 46.55 (04/16) | 46.74 (03/26) | 46.82 (04/27) | 46.87 (04/23) | 47.06 (03/30) |
| 2) Chico State | 46.80 (05/05) | 46.85 (05/05) | 47.43 (04/22) | 47.56 (04/16) | 47.85 (04/01) | 48.02 (04/08) | 48.74 (03/25) | 49.52 (03/12) |
| 3) Central Missouri | 46.80 (05/06) | 47.47 (04/27) | 48.17 (04/16) | 48.26 (04/02) |