| Time | Date | Name | Meet |
|---|---|---|---|
| 42.31 | March 16, 2014 | Ryan Lochte | Speedo Champions Series - Charlotte, NC |
| 42.54 | Dec. 7, 2013 | Dax Hill | AT&T Winter National Championships |
| 43.63 | Dec. 5, 2009 | Cullen Jones | AT&T Short Course National Championships |
| 44.48 | Jan. 19, 2008 | Bennett Clark | Toyota Grand Prix |
| 46.54 | March 22, 2005 | Jimmy Dabney | NCSA Junior National Championships |
