| 1) Indianapolis | 46.83 (05/01) | 47.41 (05/06) | 47.56 (04/04) | 47.57 (04/10) | 47.84 (03/27) | 48.31 (04/17) | 48.80 (03/27) | 51.71 (04/24) |
| 2) Chico State | 46.83 (04/29) | 47.41 (03/14) | 47.60 (03/27) | 47.77 (04/10) | 47.90 (04/03) | 48.05 (03/20) | 48.28 (04/18) | 48.64 (03/07) |