| 1) | Castro, Douglas | UC Riverside | 1:53.35 (03/26-03/28) | 1:53.45 (05/15-05/16) | 1:53.47 (04/09-04/11) | 1:53.95 (03/14) | 1:54.13 (05/02) | 1:54.23 (03/20-03/21) | 1:54.67 (04/24-04/25) | 1:55.71 (03/07) |
| 2) | Lopez, Carlos | UC Riverside | 1:53.35 (04/17) | 1:53.48 (03/26-03/28) | 1:55.00 (05/15-05/16) | 1:55.14 (04/09-04/11) | 1:55.44 (05/02) | 1:56.54 (03/20-03/21) | 1:58.54 (03/14) | 2:00.53 (03/07) |