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USA Swimming Zone Teams
| Time | Date | Name | Team | Meet |
|---|---|---|---|---|
| 52.72 | Aug. 3, 2019 | Shaine Casas | Aggie Swim Club | Phillips 66 Summer National Championships |
| 54.51 | July 28, 2018 | Shaine Casas | Aggie Swim Club | Phillips 66 Summer National Championships |
| 55.16 | Feb. 10, 2004 | Dan Westcott | The Woodlands Swim Team | ConocoPhillips Spring National Championships |
| 56.52 | July 18, 2002 | Dan Westcott | The Woodlands Swim Team | Texas Senior Circuit Long |
| 57.12 | July 19, 2001 | Dan Westcott | The Woodlands Swim Team | Speedo Champions Series - Oklahoma City |
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