| 1) | Jones, Aarin | Purdue | 53.88 (05/16-05/18) | 54.21 (04/19) | 54.30 (04/04-04/05) | 54.32 (04/12) | 54.40 (05/16-05/18) | 54.40 (05/02-05/03) | 54.42 (03/22) | 54.67 (03/15) |
| 2) | McMillan, Lilla | Tulane | 53.88 (04/19) | 54.97 (03/20-03/22) | 55.32 (05/15-05/18) | 55.68 (04/04-04/05) |