Personal Bests| Event | Result | Wind | Venue | Date |
|---|
| 50m ind. | 5.78 | | Saskatoon (CAN) | 27.01.2017 | | 60m ind. | 6.55 | | College Station, TX (USA) | 11.03.2011 | | 100m | 10.00 | +1.3 | Des Moines, IA (USA) | 10.06.2011 | | 200m | 20.13 | +0.2 | Jacksonville, FL (USA) | 26.05.2012 | | 200m ind. | 20.41 | | College Station, TX (USA) | 11.03.2011 | | 400m | 47.60 | | Jefferson City, MO (USA) | 26.05.2007 | | 4x100m | 37.79 | | DS, Daegu (KOR) | 04.09.2011 | | 4x200m | 1:20.64 | | Philadelphia, PA (USA) | 25.04.2015 | | 4x400m | 3:07.40 | | Tallahassee, FL (USA) | 06.05.2011 | | 4x400m ind. | 3:03.94 | | Ataköy Arena, Istanbul (TUR) | 11.03.2012 |
| Season's BestsNo season's bests available. |
World RankingsNot ranked currently. | | Year | Result | Wind | Venue | Date |
|---|
| 2006 | 10.64 | +0.1 | Jefferson City, MO (USA) | 27.05.2006 | | 2007 | 10.42 | 0.0 | Jefferson City, MO (USA) | 26.05.2007 | | 2008 | 10.40 | +0.4 | Lawrence, KS (USA) | 19.04.2008 | | 2009 | 10.45 | +1.6 | Atlanta, GA (USA) | 15.05.2009 | | 2010 | 10.14 | +1.7 | Miramar, FL (USA) | 09.07.2010 | | 2011 | 10.00 | +1.3 | Des Moines, IA (USA) | 10.06.2011 | | 2012 | 10.03 | +1.3 | Des Moines, IA (USA) | 06.06.2012 | | 2013 | 10.32 | -0.3 | Atlanta, GA (USA) | 17.05.2013 | | 2014 | 10.08 | +1.7 | Joplin, MO (USA) | 25.04.2014 | | 2015 | 10.27 | +0.8 | Luzern (SUI) | 14.07.2015 | | 2016 | 10.41 | +1.2 | San Antonio, TX (USA) | 26.03.2016 | | 2017 | 10.34 | +1.0 | San Antonio, TX (USA) | 18.03.2017 |
No progression. | Year | Result | Wind | Venue | Date |
|---|
| 2006 | 21.22 | +0.5 | Jefferson City, MO (USA) | 27.05.2006 | | 2007 | 20.77 | +1.3 | Independence, MO (USA) | 10.06.2007 | | 2008 | 21.49 | -1.2 | Columbus, OH (USA) | 21.06.2008 | | 2009 | 20.64 | +1.4 | Tallahassee, FL (USA) | 09.05.2009 | | 2010 | 20.24 | +1.1 | Greensboro, NC (USA) | 29.05.2010 | | 2011 | 20.19 | +1.1 | Durham, NC (USA) | 23.04.2011 | | 2012 | 20.13 | +0.2 | Jacksonville, FL (USA) | 26.05.2012 | | 2013 | 20.32 | +1.6 | Drake Stadium, Des Moines, IA (USA) | 23.06.2013 | | 2014 | 20.30 | +1.3 | Sacramento, CA (USA) | 29.06.2014 | | 2015 | 20.46 | +1.0 | Hayward Field, Eugene, OR (USA) | 27.06.2015 | | 2016 | 20.78 | +0.1 | San Marcos, TX (USA) | 30.04.2016 | | 2017 | 20.89 | +1.5 | San Antonio, TX (USA) | 18.03.2017 |
| Year | Result | Venue | Date |
|---|
| 1989 | 38.35 | New York, NY (USA) | 22.07.1989 | | 2010 | 38.96 | Miramar, FL (USA) | 10.07.2010 | | 2011 | 37.79 | DS, Daegu (KOR) | 04.09.2011 | | 2012 | 37.83 | Stade Louis II, Monaco (MON) | 20.07.2012 | | 2013 | 38.36 | Austin, TX (USA) | 30.03.2013 | | 2015 | 38.92 | Philadelphia, PA (USA) | 25.04.2015 | | 2016 | 39.43 | Austin, TX (USA) | 02.04.2016 | | 2018 | 38.96 | Gainesville, FL (USA) | 31.03.2018 |
| Year | Result | Venue | Date |
|---|
| 2010 | 3:08.90 | Clemson, SC (USA) | 17.04.2010 | | 2011 | 3:07.40 | Tallahassee, FL (USA) | 06.05.2011 | | 2012 | 3:08.90 | Tallahassee, FL (USA) | 24.03.2012 |
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