| Time | Date | Name | Meet |
|---|---|---|---|
| 51.57 | June 19, 2015 | Lorenzo Loria Elias | ST AAAA Senior Circuit 2 |
| 53.48 | Jan. 17, 2014 | Gustavo BERRETA GONZALEZ | ST TXLA Austin Grand Prix |
| 54.95 | Dec. 2, 2007 | Rodrigo Friscione | USA Swimming Championships |
| 55.28 | Feb. 17, 2007 | Rodrigo Friscione | Missouri Grand Prix |
| 56.10 | June 7, 2002 | Christian Inesta | Senior Circuit #2 |
| 56.99 | June 8, 2001 | Emilio Flores | Texas Senior Circuit #2 |
