Personal Bests| Event | Result | Wind | Venue | Date |
|---|
| 55m ind. | 6.86 | | Newport News, VA (USA) | 18.02.2006 | | 60m ind. | 7.43 | | Princess Anne, MD (USA) | 06.01.2007 | | 100m | 11.55 | +1.9 | Raleigh, NC (USA) | 25.03.2016 | | 200m | 22.92 | +0.3 | Gainesville, FL (USA) | 02.04.2010 | | 200m ind. | 24.29 | | Hampton, VA (USA) | 23.01.2009 | | 300m ind. | 36.50 | | New York, NY (USA) | 15.02.2014 | | 400m | 49.48 | | Sacramento, CA (USA) | 28.06.2014 | | 400m ind. | 50.54 | | Fayetteville, AR (USA) | 12.03.2010 | | 500m ind. | 1:09.01 | | University Park, PA (USA) | 28.01.2012 | | 600m ind. | 1:29.07 | | University Park, PA (USA) | 26.01.2013 | | 4x100m | 44.90 | | Philadelphia, PA (USA) | 22.04.2010 | | 4x200m | 1:29.86 | | Gainesville, FL (USA) | 01.04.2017 | | 4x400m | 3:16.87 | | Olympic Stadium, London (GBR) | 11.08.2012 | | 4x400m ind. | 3:24.83 | | Ergo Arena, Sopot (POL) | 09.03.2014 |
| Season's BestsNo season's bests available. |
World RankingsNot ranked currently. | | Year | Result | Wind | Venue | Date |
|---|
| 2003 | 12.18 | +1.3 | Richmond, VA (USA) | 30.05.2003 | | 2004 | 12.01 | -3.2 | Raleigh, NC (USA) | 18.06.2004 | | 2005 | 11.68 | +1.0 | Greensboro, NC (USA) | 17.06.2005 | | 2006 | 11.62 | +1.1 | Columbia, SC (USA) | 08.04.2006 | | 2010 | 12.05 | +1.6 | Greensboro, NC (USA) | 08.05.2010 | | 2016 | 11.55 | +1.9 | Raleigh, NC (USA) | 25.03.2016 |
| Year | Result | Wind | Venue | Date |
|---|
| 2003 | 24.10 | | Newport (GBR) | 24.05.2003 | | 2005 | 23.22 | +0.6 | Carson, CA (USA) | 24.06.2005 | | 2009 | 23.23 | -2.7 | Greensboro, NC (USA) | 02.05.2009 | | 2010 | 22.92 | +0.3 | Gainesville, FL (USA) | 02.04.2010 | | 2011 | 24.04 | 0.0 | Winston Salem, NC (USA) | 19.03.2011 | | 2012 | 23.25 | +1.8 | Norfolk, VA (USA) | 14.04.2012 | | 2013 | 23.77 | -0.7 | Greensboro, NC (USA) | 13.04.2013 | | 2015 | 23.07 | +0.1 | Hampton, VA (USA) | 10.04.2015 | | 2016 | 23.20 | +0.1 | Hampton, VA (USA) | 16.04.2016 |
| Year | Result | Venue | Date |
|---|
| 2004 | 55.14 | College Station, TX (USA) | 25.06.2004 | | 2008 | 51.54 | Baltimore, MD (USA) | 03.05.2008 | | 2009 | 50.58 | Fayetteville, AR (USA) | 13.06.2009 | | 2010 | 50.52 | Drake Stadium, Des Moines, IA (USA) | 26.06.2010 | | 2011 | 50.24 | DS, Daegu (KOR) | 28.08.2011 | | 2012 | 50.06 | Icahn Stadium, New York, NY (USA) | 09.06.2012 | | 2013 | 49.86 | Luzhniki Stadion, Moskva (RUS) | 11.08.2013 | | 2014 | 49.48 | Sacramento, CA (USA) | 28.06.2014 | | 2015 | 49.83 | Stade Louis II, Monaco (MON) | 17.07.2015 | | 2016 | 50.23 | Hayward Field, Eugene, OR (USA) | 28.05.2016 | | 2018 | 52.91 | Kingston (JAM) | 09.06.2018 | | 2019 | 54.91 | Göteborg (SWE) | 16.08.2019 | | 2021 | 52.01 | Nashville, TN (USA) | 06.06.2021 |
| Year | Result | Venue | Date |
|---|
| 2010 | 44.90 | Philadelphia, PA (USA) | 22.04.2010 | | 2015 | 45.02 | Hampton, VA (USA) | 10.04.2015 |
| Year | Result | Venue | Date |
|---|
| 2010 | 1:34.29 | Philadelphia, PA (USA) | 24.04.2010 | | 2016 | 1:35.38 | Raleigh, NC (USA) | 26.03.2016 | | 2017 | 1:29.86 | Gainesville, FL (USA) | 01.04.2017 |
| Year | Result | Venue | Date |
|---|
| 2010 | 3:40.83 | Greensboro, NC (USA) | 08.05.2010 | | 2011 | 3:18.09 | DS, Daegu (KOR) | 03.09.2011 | | 2012 | 3:16.87 | Olympic Stadium, London (GBR) | 11.08.2012 | | 2013 | 3:20.41 | Luzhniki Stadion, Moskva (RUS) | 17.08.2013 | | 2014 | 3:20.93 | Le Grand Stade, Marrakech (MAR) | 14.09.2014 | | 2015 | 3:19.39 | T. Robinson Stadium, Nassau (BAH) | 03.05.2015 | | 2016 | 3:21.42 | Estádio Olímpico, Rio de Janeiro (BRA) | 19.08.2016 |
|
