| Year |
Result |
Place |
Venue |
Date |
| 2000 |
48.04 |
6 |
Sydney |
Sep 27 |
| 2001 |
48.44 |
11 |
Saint-Denis |
Jul 06 |
| 2002 |
47.57 |
2 |
Zürich |
Aug 16 |
| 2003 |
48.88 |
24 |
London |
Aug 08 |
| 2004 |
47.68 |
2 |
Sacramento |
Jul 11 |
| 2005 |
47.43 |
3 |
Helsinki |
Aug 09 |
| 2006 |
48.16 |
6 |
Osaka |
May 06 |
| 2007 |
47.72 |
2 |
Indianapolis, IN |
Jun 23 |
|
| International |
| Year |
Result |
Place |
| 2000 (Olympic) |
48.04 |
4 |
| 2002 (World Cup) |
48.27 |
1 |
| 2004 (Olympic) |
48.58 |
4 |
| 2005 (World) |
47.43 |
2 |
| 2007 (World) |
48.40 |
4 |
| National |
| Year |
Result |
Place |
| 2000 (OT & USA Champ.) |
48.46 |
3 |
| 2001 (USA Champ.) |
48.79 |
3 |
| 2002 (USA Champ.) |
48.12 |
1 |
| 2003 (USA Champ.) |
49.23 |
4 |
| 2004 (OT & USA Champ.) |
47.68 |
1 |
| 2005 (USA Champ.) |
48.03 |
3 |
| 2006 (USA Champ.) |
48.44 |
3 |
| 2007 (USA Champ.) |
47.72 |
1 |
| 2009 (USA Champ.) |
DQ |
|
|
|