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| Time | Date | Name | Team | Meet |
|---|---|---|---|---|
| 46.63 | March 14, 2024 | Daniel de Oliveira | Carson-Newman University | NCAA Division II Championship |
| 46.91 | Feb. 15, 2024 | Daniel de Oliveira | Carson-Newman University | South Atlantic Conference Championships |
| 47.65 | Nov. 19, 2021 | Nicolas Lenuza | Carson-Newman University | Tennessee Invitational |
| 48.85 | Oct. 29, 2021 | Nicolas Lenuza | Carson-Newman University | Carson-Newman vs. Milligan |
| 49.72 | Oct. 10, 2021 | Viacheslav Ohnov | Wingate University | UIndy Invite |
| 51.04 | Oct. 2, 2021 | Zack Telep | Carson-Newman University | King Early Season Invite |
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