| Name | Time | Date | Meet |
|---|---|---|---|
| Caeleb Dressel | 49.76 | June 18, 2021 | USA Olympic Team Trials - Wave 2 |
| Caeleb Dressel | 50.36 | June 23, 2019 | CA MVN Fran Crippen Memorial Swim Meet of Champions |
| Caeleb Dressel | 51.41 | May 17, 2019 | GA SCAT Atlanta Classic Swim Meet |
| Caeleb Dressel | 51.51 | March 9, 2019 | TYR Pro Swim Series - Des Moines |
| Omar Pinzon | 52.97 | July 17, 2009 | 2009 Southern Zone LC Sectionals |
| Gabriel MANGABEIRA | 54.33 | July 21, 2004 | 2004 Speedo Champions Series |
| Gabriel MANGABEIRA | 56.55 | June 28, 2002 | 2002 ATAC Long Course Open |
