| Name | Time | Date | Meet |
|---|---|---|---|
| Paul Le | 46.73 | March 7, 2014 | 2014 Mid-American Championships (M) |
| Paul Le | 47.03 | March 6, 2014 | 2014 Mid-American Championships (M) |
| Paul Le | 47.09 | Nov. 23, 2013 | Northwestern TYR Invitational |
| Roko Simunic | 47.40 | Feb. 20, 2009 | 2009 Sun Belt Conference Championships - Day Two - Finals |
| Nicolas Villarroel | 48.06 | Nov. 15, 2008 | 2008 Henderson State Invitational |
| Jake Hoffmann | 52.00 | Nov. 7, 2008 | Missouri @Southern Illinois |
