| 1) | Mowatt, Giovani | Howard | 1:50.28 (05/11-05/12) | 1:51.30 (05/03-05/05) | 1:52.84 (04/20-04/21) | 1:53.45 (03/15-03/17) | 1:53.54 (04/14) | 2:01.06 (05/03-05/05) |
| 2) | Greene, Kevin | New Hampshire | 1:50.28 (05/10-05/12) | 1:51.48 (05/05-05/06) | 1:51.84 (05/05-05/06) | 1:53.05 (04/24) | 1:53.27 (04/20-04/21) | 1:53.72 (03/31) |