| 1) | Eastburg, Nils | Wheaton (Ill.) | 48.77 (05/08-05/09) | 48.81 (05/02-05/03) | 48.85 (05/15) | 48.86 (05/02-05/03) | 48.95 (05/12-05/13) | 49.15 (04/17) | 49.22 (04/05) | 49.50 (03/21) |
| 2) | Teel, Garrett | Nebraska Wesleyan | 48.77 (05/16) | 48.82 (05/02-05/03) | 49.01 (04/18) |