| 1) | Wankel, Malcolm | Oklahoma | 1:49.58 (05/02-05/03) | 1:50.45 (04/26) | 1:50.74 (04/18-04/19) | 1:50.85 (05/16-05/18) | 1:51.32 (04/05) | |
| 2) | Busienei, Kelvin | Wichita State | 1:49.58 (05/03) | 1:50.72 (05/16-05/18) | 1:51.32 (04/17-04/19) | 1:51.79 (03/29) | 1:51.89 (05/16-05/18) | 1:53.03 (04/04-04/05) |