Personal Bests| Event | Result | Venue | Date |
|---|
| 400m | 47.94 | Joplin, MO (USA) | 30.04.2005 | | 400m ind. | 48.26 | Norman, OK (USA) | 04.02.2006 | | 600m | 1:17.20 | Brugg (SUI) | 28.06.2016 | | 800m | 1:46.14 | Burnaby (CAN) | 01.07.2011 | | 800m ind. | 1:47.73 | Fayetteville, AR (USA) | 02.03.2007 | | 1000m | 2:23.58 | Houston, TX (USA) | 23.07.2016 | | 1000m ind. | 2:28.42 | Columbia, MO (USA) | 14.01.2005 | | 1500m | 3:46.44 | Walnut, CA (USA) | 06.06.2010 | | Mile | 4:08.67 | Los Angeles, CA (USA) | 14.04.2012 | | Mile ind. | 4:09.60 | Fayetteville, AR (USA) | 12.01.2007 | | 4x400m | 3:07.43 | Hampden Park, Glasgow (GBR) | 01.08.2014 |
| Season's BestsNo season's bests available. |
World RankingsNot ranked currently. | | Year | Result | Venue | Date |
|---|
| 2005 | 47.94 | Joplin, MO (USA) | 30.04.2005 | | 2008 | 48.23 | Los Angeles, CA (USA) | 11.04.2008 | | 2010 | 48.75 | Los Angeles, CA (USA) | 09.04.2010 | | 2014 | 49.07 | Rheinau-Freistett (GER) | 20.07.2014 |
| Year | Result | Venue | Date |
|---|
| 1999 | 1:51.02 | Johannesburg (RSA) | 15.09.1999 | | 2001 | 1:49.49 | Commonwealth Stadium, Edmonton (CAN) | 04.08.2001 | | 2002 | 1:48.40 | Manchester (GBR) | 27.07.2002 | | 2003 | 1:51.57 | Abuja (NGR) | 12.10.2003 | | 2004 | 1:47.01 | Austin, TX (USA) | 10.06.2004 | | 2005 | 1:47.54 | Norman, OK (USA) | 28.05.2005 | | 2006 | 1:46.80 | Sacramento, CA (USA) | 10.06.2006 | | 2007 | 1:47.56 | Alcalá de Henáres (ESP) | 07.07.2007 | | 2008 | 1:47.68 | Brasschaat (BEL) | 23.07.2008 | | 2009 | 1:46.3h | Brasschaat (BEL) | 26.07.2009 | | 2010 | 1:46.64 | Stadio Guidobaldi, Rieti (ITA) | 29.08.2010 | | 2011 | 1:46.14 | Burnaby (CAN) | 01.07.2011 | | 2012 | 1:46.61 | Walnut, CA (USA) | 21.04.2012 | | 2013 | 1:46.20 | Los Angeles, CA (USA) | 01.06.2013 | | 2014 | 1:48.00 | La Chaux-de-Fonds (SUI) | 06.07.2014 | | 2015 | 1:51.10 | Chula Vista, CA (USA) | 13.06.2015 | | 2016 | 1:47.94 | Walnut, CA (USA) | 16.04.2016 |
| Year | Result | Venue | Date |
|---|
| 2004 | 3:51.07 | Tulsa, OK (USA) | 24.04.2004 | | 2007 | 3:56.64 | Tulsa, OK (USA) | 24.03.2007 | | 2010 | 3:46.44 | Walnut, CA (USA) | 06.06.2010 | | 2014 | 3:51.66 | Los Angeles, CA (USA) | 12.04.2014 | | 2016 | 3:54.44 | Los Angeles, CA (USA) | 09.04.2016 |
| Year | Result | Venue | Date |
|---|
| 2012 | 4:08.67 | Los Angeles, CA (USA) | 14.04.2012 |
|
