| Name | Time | Date | Meet |
|---|---|---|---|
| Jack Boyd | 45.43 | March 21, 2014 | NCSA Junior National Championships - Boys |
| Jack Boyd | 47.42 | Dec. 9, 2012 | 2012 STAR Short Course Invitational |
| Jack Boyd | 47.48 | March 27, 2011 | Speedo Champions Series - Buffalo |
| Zachary Pearce | 48.13 | March 10, 2011 | 2011 Speedo Sectionals - Federal Way, WA |
| Jim Losi | 49.02 | March 10, 2007 | Speedo Champions Series (Harvard) |
