| Time | Date | Name | Meet |
|---|---|---|---|
| 48.82 | Feb. 6, 2021 | Scott McNiece | UIL 6A Region 06 Championship |
| 50.14 | Feb. 14, 2020 | Scott McNiece | UIL 6A State Championship |
| 50.45 | Jan. 31, 2020 | Scott McNiece | UIL 6A Region 04 Championship |
| 50.94 | Feb. 1, 2019 | Scott McNiece | UIL 6A Region 4 Championship |
| 52.28 | Feb. 2, 2018 | Scott McNiece | UIL 5A Region 6 Championship |
