| Name | Time | Date | Meet |
|---|---|---|---|
| Seth Kyriakidis | 49.70 | Dec. 5, 2015 | 2015 SE XCEL Meet of Champs |
| Matthew Beach | 49.85 | March 14, 2014 | Speedo Champions Series - Charlotte, NC |
| Grant Stafford | 49.74 | Feb. 24, 2013 | 2013 SE Southeastern Champions |
| Tyler Shedron | 50.18 | March 21, 2008 | NCSA Junior National Championships |
| Tyler Shedron | 51.27 | March 23, 2007 | 2007 NCSA Junior Nationals |
| Tyler Shedron | 51.49 | March 24, 2006 | 2006 NCSA Junior National Championships |
