| Year |
Result |
Place |
Venue |
Date |
| 2009 |
50.58 |
17 |
Fayetteville, AR |
Jun 13 |
| 2010 |
50.52 |
11 |
Des Moines, IA |
Jun 26 |
| 2011 |
50.24 |
8 |
Daegu |
Aug 28 |
| 2012 |
50.06 |
10 |
New York City, NY |
Jun 09 |
| 2013 |
49.86 |
5 |
Moskva |
Aug 11 |
| 2014 |
49.48 |
1 |
Sacramento, CA |
Jun 28 |
| 2015 |
49.83 |
3 |
Monaco |
Jul 17 |
| 2016 |
50.23 |
9 |
Eugene, OR |
May 28 |
|
| International |
| Year |
Result |
Place |
| 2011 (World) |
50.45 |
4 |
| 2012 (Olympic) |
50.33 |
7 |
| 2013 (World) |
50.68 |
6 |
| 2014 (World Indoor) |
51.12 |
1 |
| 2014 (World Cup) |
49.94 |
1 |
| National |
| Year |
Result |
Place |
| 2010 (USA Champ.) |
50.52 |
2 |
| 2011 (USA Champ.) |
50.49 |
2 |
| 2012 (OT & USA Champ.) |
50.43 |
3 |
| 2013 (USA Champ.) |
50.01 |
2 |
| 2014 (USA Champ.) |
49.48 |
1 |
| 2015 (USA Champ.) |
50.88 |
4 |
| 2016 (OT & USA Champ.) |
50.37 |
5 |
|
|