Personal Bests| Event | Result | Wind | Venue | Date |
|---|
| 60m ind. | 7.62 | | Winston Salem, NC (USA) | 11.01.2014 | | 100m | 11.65 | +0.9 | Greensboro, NC (USA) | 12.04.2014 | | 200m | 23.15 | +2.0 | Champaign, IL (USA) | 18.05.2008 | | 200m ind. | 23.48 | | University Park, PA (USA) | 29.01.2005 | | 300m | 37.37 | | Göteborg (SWE) | 10.08.2010 | | 300m ind. | 37.59 | | New York, NY (USA) | 21.12.2002 | | 400m | 50.84 | | Tallahassee, FL (USA) | 31.05.2008 | | 400m ind. | 52.13 | | Ataköy Arena, Istanbul (TUR) | 10.03.2012 | | 500m ind. | 1:08.70 | | University Park, PA (USA) | 30.01.2010 | | 600m ind. | 1:28.15 | | University Park, PA (USA) | 16.01.2010 | | 4x200m | 1:32.02 | | Gainesville, FL (USA) | 06.04.2013 | | 4x400m | 3:22.61 | | Luzhniki Stadion, Moskva (RUS) | 17.08.2013 | | 4x400m ind. | 3:27.56 | | Scandinavium, Göteborg (SWE) | 03.03.2013 | | Sprint Medley 1600m | 3:43.72 | | Philadelphia, PA (USA) | 28.04.2012 |
| Season's BestsNo season's bests available. |
World RankingsNot ranked currently. | | Year | Result | Wind | Venue | Date |
|---|
| 2003 | 11.79 | | Raleigh, NC (USA) | 10.05.2003 | | 2005 | 11.90 | +1.7 | Long Beach, CA (USA) | 16.04.2005 | | 2008 | 11.85 | 0.0 | University Park, PA (USA) | 10.05.2008 | | 2014 | 11.65 | +0.9 | Greensboro, NC (USA) | 12.04.2014 |
| Year | Result | Wind | Venue | Date |
|---|
| 2001 | 24.76 | +0.7 | Raleigh, NC (USA) | 16.06.2001 | | 2002 | 24.00 | 0.0 | Raleigh, NC (USA) | 15.06.2002 | | 2003 | 23.24 | 0.0 | Raleigh, NC (USA) | 14.06.2003 | | 2004 | 23.31 | +0.3 | College Station, TX (USA) | 27.06.2004 | | 2005 | 24.35 | -0.1 | Columbus, OH (USA) | 15.05.2005 | | 2006 | 23.41 | +0.9 | East Lansing, MI (USA) | 14.05.2006 | | 2007 | 24.03 | -0.2 | University Park, PA (USA) | 12.05.2007 | | 2008 | 23.15 | +2.0 | Champaign, IL (USA) | 18.05.2008 | | 2009 | 23.52 | +0.8 | Walnut, CA (USA) | 18.04.2009 | | 2010 | 23.54 | +0.5 | Nuoro (ITA) | 14.07.2010 | | 2011 | 23.41 | +1.7 | Gainesville, FL (USA) | 01.04.2011 | | 2012 | 23.38 | +2.0 | Azusa, CA (USA) | 20.04.2012 | | 2013 | 23.82 | -1.2 | St-Martin (FRA) | 11.05.2013 | | 2014 | 24.16 | +0.3 | Charlottesville, VA (USA) | 09.05.2014 | | 2015 | 23.59 | +1.2 | Fayetteville, AR (USA) | 11.04.2015 | | 2016 | 24.56 | -1.8 | High Point, NC (USA) | 02.04.2016 |
No progression. No progression. | Year | Result | Venue | Date |
|---|
| 2010 | 37.37 | Göteborg (SWE) | 10.08.2010 |
| Year | Result | Venue | Date |
|---|
| 2002 | 53.59 | Raleigh, NC (USA) | 15.06.2002 | | 2003 | 52.43 | Orlando, FL (USA) | 31.05.2003 | | 2005 | 52.17 | New York, NY (USA) | 27.05.2005 | | 2006 | 51.15 | Santo Domingo (DOM) | 08.07.2006 | | 2007 | 51.27 | Sacramento, CA (USA) | 09.06.2007 | | 2008 | 50.84 | Tallahassee, FL (USA) | 31.05.2008 | | 2009 | 51.44 | Toronto (CAN) | 11.06.2009 | | 2010 | 51.42 | Gainesville, FL (USA) | 02.04.2010 | | 2011 | 51.24 | Ponce (PUR) | 14.05.2011 | | 2012 | 51.54 | Icahn Stadium, New York, NY (USA) | 09.06.2012 | | 2013 | 51.12 | Olympic Stadium, London (GBR) | 27.07.2013 | | 2014 | 52.11 | Icahn Stadium, New York, NY (USA) | 14.06.2014 | | 2015 | 52.50 | Gainesville, FL (USA) | 03.04.2015 | | 2016 | 54.28 | Winston Salem, NC (USA) | 19.03.2016 |
| Year | Result | Venue | Date |
|---|
| 2013 | 1:32.02 | Gainesville, FL (USA) | 06.04.2013 | | 2014 | 1:33.67 | Gainesville, FL (USA) | 05.04.2014 |
| Year | Result | Venue | Date |
|---|
| 2007 | 3:38.48 | Philadelphia, PA (USA) | 27.04.2007 | | 2008 | 3:27.69 | Des Moines, IA (USA) | 14.06.2008 | | 2009 | 3:26.50 | Philadelphia, PA (USA) | 25.04.2009 | | 2010 | 3:28.48 | Philadelphia, PA (USA) | 24.04.2010 | | 2012 | 3:24.76 | Olympic Stadium, London (GBR) | 11.08.2012 | | 2013 | 3:22.61 | Luzhniki Stadion, Moskva (RUS) | 17.08.2013 | | 2014 | 3:24.34 | Letzigrund, Zürich (SUI) | 17.08.2014 | | 2015 | 3:28.51 | T. Robinson Stadium, Nassau (BAH) | 02.05.2015 |
| Year | Result | Venue | Date |
|---|
| 2012 | 3:43.72 | Philadelphia, PA (USA) | 28.04.2012 |
|
