Personal Bests| Event | Result | Venue | Date |
|---|
| 200m | 21.03 | Charlotte, NC (USA) | 17.04.2004 | | 200m ind. | 21.29 | New York, NY (USA) | 10.03.2002 | | 400m | 45.06 | Indianapolis, IN (USA) | 22.06.2007 | | 400m ind. | 45.41 | Albuquerque, NM (USA) | 28.02.2010 | | 500m ind. | 1:00.70 | New York, NY (USA) | 14.02.2015 | | 600m ind. | 1:17.85 | Reggie Lewis Center, Boston, MA (USA) | 14.02.2016 | | 400mH | 47.30 | Olympiastadion, Helsinki (FIN) | 09.08.2005 | | 4x200m | 1:23.08 | Myrtle Beach, SC (USA) | 18.03.2011 | | 4x400m | 2:59.00 | Poljud Stadion, Split (CRO) | 05.09.2010 | | 4x400m ind. | 3:03.40 | Aspire Dome, Doha (QAT) | 14.03.2010 |
| Season's BestsNo season's bests available. |
World RankingsNot ranked currently. | | Year | Result | Wind | Venue | Date |
|---|
| 2001 | 21.58 | +1.4 | Decatur, IL (USA) | 05.07.2001 | | 2002 | 21.33 | +0.8 | Nassau (BAH) | 13.07.2002 | | 2003 | 21.29 | +1.1 | Durham, NC (USA) | 05.04.2003 | | 2004 | 21.03 | | Charlotte, NC (USA) | 17.04.2004 | | 2009 | 21.18 | +1.0 | Champaign, IL (USA) | 02.05.2009 |
| Year | Result | Venue | Date |
|---|
| 2001 | 47.59 | Sacramento, CA (USA) | 29.07.2001 | | 2003 | 46.25 | Rethymno (GRE) | 06.07.2003 | | 2005 | 45.45 | Rethymno (GRE) | 10.07.2005 | | 2006 | 46.10 | Chapel Hill, NC (USA) | 15.04.2006 | | 2007 | 45.06 | Indianapolis, IN (USA) | 22.06.2007 | | 2008 | 45.47 | Rethymno (GRE) | 14.07.2008 | | 2009 | 45.96 | Stockholm (SWE) | 31.07.2009 | | 2011 | 45.91 | Hayward Field, Eugene, OR (USA) | 04.06.2011 | | 2012 | 46.33 | Raleigh, NC (USA) | 30.03.2012 | | 2014 | 46.34 | Greensboro, NC (USA) | 12.04.2014 | | 2017 | 46.39 | Raleigh, NC (USA) | 24.03.2017 | | 2018 | 46.50 | Gainesville, FL (USA) | 29.03.2018 |
| Year | Result | Venue | Date |
|---|
| 2010 | 1:53.14 | Gainesville, FL (USA) | 02.04.2010 | | 2011 | 1:53.40 | Gainesville, FL (USA) | 01.04.2011 | | 2012 | 1:53.79 | High Point, NC (USA) | 24.03.2012 | | 2014 | 1:53.02 | Gainesville, FL (USA) | 04.04.2014 | | 2015 | 1:52.92 | Coral Gables, FL (USA) | 21.03.2015 | | 2016 | 1:51.75 | Gainesville, FL (USA) | 01.04.2016 | | 2018 | 1:54.33 | Columbia, SC (USA) | 24.03.2018 |
No progression. | Year | Result | Venue | Date |
|---|
| 2000 | 52.17 | Amherst, MA (USA) | 28.07.2000 | | 2001 | 50.86 | Sacramento, CA (USA) | 29.07.2001 | | 2002 | 50.00 | National Stadium, Kingston (JAM) | 19.07.2002 | | 2003 | 48.23 | Madrid (ESP) | 19.07.2003 | | 2004 | 47.86 | Stade Louis II, Monaco (MON) | 19.09.2004 | | 2005 | 47.30 | Olympiastadion, Helsinki (FIN) | 09.08.2005 | | 2006 | 47.48 | Indianapolis, IN (USA) | 24.06.2006 | | 2007 | 48.13 | Osaka (JPN) | 05.05.2007 | | 2008 | 48.02 | National Stadium, Beijing (CHN) | 16.08.2008 | | 2009 | 47.98 | Stade Louis II, Monaco (MON) | 28.07.2009 | | 2010 | 47.32 | Drake Stadium, Des Moines, IA (USA) | 26.06.2010 | | 2011 | 47.93 | Hayward Field, Eugene, OR (USA) | 26.06.2011 | | 2012 | 48.20 | Lawrence, KS (USA) | 21.04.2012 | | 2013 | 48.09 | Drake Stadium, Des Moines, IA (USA) | 22.06.2013 | | 2014 | 48.76 | Charlottesville, VA (USA) | 09.05.2014 | | 2015 | 48.09 | Suhaim bin Hamad Stadium, Doha (QAT) | 15.05.2015 | | 2016 | 49.04 | Hayward Field, Eugene, OR (USA) | 28.05.2016 | | 2017 | 48.63 | Shanghai Stadium, Shanghai (CHN) | 13.05.2017 | | 2018 | 49.08 | Suhaim bin Hamad Stadium, Doha (QAT) | 04.05.2018 |
| Year | Result | Venue | Date |
|---|
| 2011 | 1:23.08 | Myrtle Beach, SC (USA) | 18.03.2011 |
| Year | Result | Venue | Date |
|---|
| 2002 | 3:03.56 | National Stadium, Kingston (JAM) | 20.07.2002 | | 2003 | 3:00.72 | Philadelphia, PA (USA) | 26.04.2003 | | 2004 | 3:04.96 | München (GER) | 08.08.2004 | | 2005 | 3:01.91 | Austin, TX (USA) | 09.04.2005 | | 2007 | 3:00.04 | Philadelphia, PA (USA) | 28.04.2007 | | 2008 | 3:01.12 | Philadelphia, PA (USA) | 26.04.2008 | | 2009 | 3:01.40 | Olympiastadion, Berlin (GER) | 22.08.2009 | | 2010 | 2:59.00 | Poljud Stadion, Split (CRO) | 05.09.2010 | | 2011 | 2:59.31 | DS, Daegu (KOR) | 02.09.2011 | | 2012 | 3:00.15 | Philadelphia, PA (USA) | 28.04.2012 | | 2013 | 3:00.91 | Philadelphia, PA (USA) | 27.04.2013 | | 2014 | 3:01.98 | Gainesville, FL (USA) | 05.04.2014 | | 2016 | 3:04.70 | Gainesville, FL (USA) | 01.04.2016 |
| Year | Result | Venue | Date |
|---|
| 2013 | 3:18.97 | Gainesville, FL (USA) | 06.04.2013 |
|
