| 1) | Silva, Elijah | Tulsa | 1:49.21 (05/02) | 1:49.52 (05/15-05/18) | 1:51.27 (04/19) | 1:51.42 (05/04) | 1:51.68 (04/04-04/05) | 1:51.85 (03/21-03/22) | 1:52.15 (05/15-05/18) |
| 2) | Bennett, Aaron | Lamar | 1:49.21 (04/26) | 1:49.97 (05/16-05/17) | 1:50.89 (03/27-03/29) | 1:51.43 (05/09-05/11) | 1:51.68 (04/17-04/19) | 1:54.12 (05/09-05/11) |