| 1) | Payne, Latonya | Jacksonville | 59.20 (05/10-05/11) | 59.77 (04/12-04/13) | 1:00.38 (04/04-04/06) | 1:00.91 (04/20) | 1:01.26 (03/30) | 1:01.34 (03/01-03/02) | ||
| 2) | Grigg, Kellie | UC Davis | 59.20 (05/10-05/11) | 1:00.24 (05/10-05/11) | 1:00.53 (04/26) | 1:00.80 (04/18-04/20) | 1:00.86 (04/11-04/13) | 1:01.19 (03/16) | 1:01.53 (04/05-04/06) | 1:01.61 (03/29-03/30) |