| Time | Date | Name | Meet |
|---|---|---|---|
| 50.83 | July 2, 2008 | Morgon Henderson-Kunz | U.S. Olympic Team Trials |
| 50.84 | Aug. 7, 2007 | Morgon Henderson-Kunz | Speedo Junior National Championships |
| 51.32 | Aug. 1, 2007 | Morgon Henderson-Kunz | ConocoPhillips USA Swimming Championships |
| 51.55 | May 27, 2007 | Morgon Henderson-Kunz | CA NOVA Speedo Grand Challenge |
| 53.73 | Aug. 8, 2006 | Morgon Henderson-Kunz | USA Swimming Junior National Championships |
| 57.02 | Aug. 2, 2003 | Matt Morton | PC WEST Far West Championships |
