Personal Bests| Event | Result | Wind | Venue | Date |
|---|
| 60m ind. | 7.46 | | Chapel Hill, NC (USA) | 05.02.2005 | | 100m | 11.82 | -2.8 | La Gosier (FRA) | 08.05.2004 | | 200m | 22.73 | -2.0 | Rieti (ITA) | 06.09.2009 | | 200m ind. | 23.22 | | Fayetteville, AR (USA) | 10.03.2000 | | 400m | 49.64 | | Drake Stadium, Des Moines, IA (USA) | 26.06.2010 | | 400m ind. | 50.86 | | Albuquerque, NM (USA) | 28.02.2010 | | 500m ind. | 1:09.56 | | University Park, PA (USA) | 27.01.2007 | | 4x200m | 1:30.01 | | Philadelphia, PA (USA) | 24.04.2004 | | 4x400m | 3:17.83 | | Olympiastadion, Berlin (GER) | 23.08.2009 | | 4x400m ind. | 3:27.34 | | Aspire Dome, Doha (QAT) | 14.03.2010 |
| Season's BestsNo season's bests available. |
World RankingsNot ranked currently. | No progression. | Year | Result | Wind | Venue | Date |
|---|
| 1999 | 24.12 | +0.7 | Fairfax, VA (USA) | 08.05.1999 | | 2000 | 23.47 | -1.1 | Tallahassee, FL (USA) | 15.04.2000 | | 2003 | 23.01 | +0.9 | Atlanta, GA (USA) | 07.06.2003 | | 2004 | 23.30 | -1.5 | La Gosier (FRA) | 08.05.2004 | | 2006 | 23.41 | 0.0 | Tempe, AZ (USA) | 15.04.2006 | | 2007 | 22.96 | +0.3 | Lauderdale Lakes, FL (USA) | 07.04.2007 | | 2008 | 22.76 | +0.3 | Mangueirão, Belém (BRA) | 25.05.2008 | | 2009 | 22.73 | -2.0 | Rieti (ITA) | 06.09.2009 | | 2010 | 22.86 | -0.2 | Ponce (PUR) | 08.05.2010 | | 2011 | 22.99 | -0.2 | Ponce (PUR) | 14.05.2011 |
| Year | Result | Venue | Date |
|---|
| 1999 | 54.34 | Tallahassee, FL (USA) | 17.04.1999 | | 2000 | 52.31 | Fairfax, VA (USA) | 06.05.2000 | | 2001 | 54.09 | Durham, NC (USA) | 07.04.2001 | | 2002 | 52.72 | Walnut, CA (USA) | 21.04.2002 | | 2003 | 51.94 | Atlanta, GA (USA) | 07.06.2003 | | 2004 | 51.12 | Atlanta, GA (USA) | 05.06.2004 | | 2005 | 52.33 | Hermosillo (MEX) | 21.05.2005 | | 2006 | 52.25 | Indianapolis, IN (USA) | 22.06.2006 | | 2007 | 51.66 | National Stadium, Kingston (JAM) | 05.05.2007 | | 2009 | 49.95 | Olympiastadion, Berlin (GER) | 16.08.2009 | | 2010 | 49.64 | Drake Stadium, Des Moines, IA (USA) | 26.06.2010 | | 2011 | 50.70 | Hayward Field, Eugene, OR (USA) | 25.06.2011 | | 2012 | 51.22 | Bislett Stadion, Oslo (NOR) | 07.06.2012 |
| Year | Result | Venue | Date |
|---|
| 2002 | 1:32.52 | Philadelphia, PA (USA) | 27.04.2002 | | 2004 | 1:30.01 | Philadelphia, PA (USA) | 24.04.2004 |
| Year | Result | Venue | Date |
|---|
| 2004 | 3:25.86 | München (GER) | 08.08.2004 | | 2006 | 3:31.58 | Austin, TX (USA) | 08.04.2006 | | 2007 | 3:24.70 | Philadelphia, PA (USA) | 28.04.2007 | | 2009 | 3:17.83 | Olympiastadion, Berlin (GER) | 23.08.2009 | | 2010 | 3:26.12 | Philadelphia, PA (USA) | 24.04.2010 | | 2011 | 3:22.92 | Philadelphia, PA (USA) | 30.04.2011 |
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