Personal Bests| Event | Result | Wind | Venue | Date |
|---|
| 200m | 20.19 | +1.2 | Carson, CA (USA) | 21.05.2006 | | 200m ind. | 20.93 | | Fayetteville, AR (USA) | 02.03.2012 | | 300m | 31.72 | | Ostrava (CZE) | 12.06.2008 | | 400m | 43.45 | | Yanmar Stadium Nagai, Osaka (JPN) | 31.08.2007 | | 400m ind. | 45.39 | | Fayetteville, AR (USA) | 13.03.2004 | | 4x100m | 39.35 | | Austin, TX (USA) | 30.03.2013 | | 4x200m | 1:22.60 | | Austin, TX (USA) | 01.04.2017 | | 4x400m | 2:55.39 | | National Stadium, Beijing (CHN) | 23.08.2008 | | 4x400m ind. | 3:01.96 | | Fayetteville, AR (USA) | 11.02.2006 |
| Season's BestsNo season's bests available. |
World RankingsNot ranked currently. | | Year | Result | Venue | Date |
|---|
| 2014 | 10.92 | Houston, TX (USA) | 06.06.2014 |
| Year | Result | Wind | Venue | Date |
|---|
| 2001 | 21.33 | +1.4 | Austin, TX (USA) | 12.05.2001 | | 2002 | 20.41 | | Lubbock, TX (USA) | 27.04.2002 | | 2003 | 20.78 | +1.4 | Austin, TX (USA) | 03.05.2003 | | 2004 | 20.59 | +1.0 | Houston, TX (USA) | 30.06.2004 | | 2006 | 20.19 | +1.2 | Carson, CA (USA) | 21.05.2006 | | 2007 | 20.35 | -0.3 | Indianapolis, IN (USA) | 24.06.2007 | | 2008 | 20.37 | +1.3 | Arlington, TX (USA) | 29.03.2008 | | 2009 | 20.30 | +1.3 | Icahn Stadium, New York, NY (USA) | 30.05.2009 | | 2011 | 20.71 | +0.1 | Fort Worth, TX (USA) | 18.03.2011 | | 2012 | 20.53 | +1.8 | Arlington, TX (USA) | 24.03.2012 | | 2013 | 21.39 | +1.0 | Waco, TX (USA) | 22.03.2013 | | 2014 | 21.09 | -0.7 | Houston, TX (USA) | 06.06.2014 | | 2016 | 21.21 | +0.9 | San Antonio, TX (USA) | 26.03.2016 |
| Year | Result | Venue | Date |
|---|
| 2008 | 31.72 | Ostrava (CZE) | 12.06.2008 | | 2014 | 33.02 | San Marcos, TX (USA) | 23.05.2014 |
| Year | Result | Venue | Date |
|---|
| 2001 | 46.68 | Sacramento, CA (USA) | 09.06.2001 | | 2002 | 45.57 | Lubbock, TX (USA) | 27.04.2002 | | 2003 | 45.13 | Tempe, AZ (USA) | 12.04.2003 | | 2004 | 44.00 | Olympic Stadium, Athina (GRE) | 23.08.2004 | | 2005 | 43.93 | Olympiastadion, Helsinki (FIN) | 12.08.2005 | | 2006 | 43.62 | Stadio Olimpico, Roma (ITA) | 14.07.2006 | | 2007 | 43.45 | Yanmar Stadium Nagai, Osaka (JPN) | 31.08.2007 | | 2008 | 43.82 | Letzigrund, Zürich (SUI) | 29.08.2008 | | 2009 | 44.60 | Olympiastadion, Berlin (GER) | 21.08.2009 | | 2010 | 44.13 | Letzigrund, Zürich (SUI) | 19.08.2010 | | 2011 | 44.88 | Baie Mahault (FRA) | 07.05.2011 | | 2012 | 44.96 | Walnut, CA (USA) | 21.04.2012 | | 2013 | 45.35 | Des Moines, IA (USA) | 26.04.2013 | | 2014 | 46.01 | Ponce (PUR) | 17.05.2014 | | 2015 | 45.42 | Edmonton (CAN) | 12.07.2015 | | 2016 | 45.51 | Edmonton (CAN) | 15.07.2016 |
| Year | Result | Venue | Date |
|---|
| 2015 | 1:53.02 | San Marcos, TX (USA) | 28.03.2015 |
| Year | Result | Venue | Date |
|---|
| 2013 | 39.35 | Austin, TX (USA) | 30.03.2013 |
| Year | Result | Venue | Date |
|---|
| 2017 | 1:22.60 | Austin, TX (USA) | 01.04.2017 |
| Year | Result | Venue | Date |
|---|
| 2004 | 2:55.91 | Olympic Stadium, Athina (GRE) | 28.08.2004 | | 2005 | 2:56.91 | Olympiastadion, Helsinki (FIN) | 14.08.2005 | | 2006 | 3:00.04 | Austin, TX (USA) | 08.04.2006 | | 2007 | 2:55.56 | Yanmar Stadium Nagai, Osaka (JPN) | 02.09.2007 | | 2008 | 2:55.39 | National Stadium, Beijing (CHN) | 23.08.2008 | | 2009 | 2:57.86 | Olympiastadion, Berlin (GER) | 23.08.2009 | | 2011 | 3:04.38 | Austin, TX (USA) | 09.04.2011 | | 2012 | 3:01.54 | Austin, TX (USA) | 31.03.2012 | | 2013 | 3:02.21 | Austin, TX (USA) | 30.03.2013 | | 2014 | 3:04.70 | Austin, TX (USA) | 29.03.2014 | | 2015 | 2:58.43 | T. Robinson Stadium, Nassau (BAH) | 03.05.2015 | | 2016 | 3:03.73 | Philadelphia, PA (USA) | 30.04.2016 |
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