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| Time | Date | Name | Team | Meet |
|---|---|---|---|---|
| 45.93 | Feb. 21, 2020 | Will Kearsey | University of Connecticut | American Athletic Conference Championships |
| 46.60 | Feb. 20, 2015 | Samuel Straughan | Southern Methodist University | American Conference Championships |
| 46.68 | March 27, 2014 | Grigory Tarasevich | University of Louisville | NCAA Division I Mens Championships |
| 46.85 | Dec. 5, 2013 | Grigory Tarasevich | University of Louisville | AT&T Winter National Championships |
| 47.62 | Nov. 23, 2013 | Aaron Young | University of Louisville | Michigan Invitational |
| 48.03 | Nov. 22, 2013 | Nick Hasemann | University of Louisville | Michigan Invitational |
| 48.96 | Oct. 24, 2013 | Grigory Tarasevich | University of Louisville | Louisville vs. Tennessee |
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