| 1) | Perrier, Gregory | Manhattan | 1:49.11 (05/15-05/17) | 1:50.00 (05/02-05/03) | 1:50.09 (03/20-03/21) | 1:50.55 (04/17-04/18) | 1:51.21 (05/11) |
| 2) | Smith, Kisean | Georgia | 1:49.11 (05/09) | 1:50.07 (04/16-04/18) | 1:50.17 (04/22-04/26) | 1:50.85 (05/14-05/16) | 1:51.20 (04/02-04/04) |