| Name | Time | Date | Meet |
|---|---|---|---|
| Blair Bish | 51.93 | March 1, 2018 | Mid-American Championships (M) |
| Blair Bish | 52.20 | Nov. 17, 2017 | Purdue Invitational |
| Artur Osvath | 53.31 | Jan. 28, 2017 | Notre Dame Shamrock Invitational |
| Cajun Skinner | 53.57 | Nov. 15, 2008 | 2008 Henderson State Invitational |
| Martin Cernansky | 57.40 | Nov. 7, 2008 | Missouri @Southern Illinois |
