Personal Bests| Event | Result | Venue | Date |
|---|
| 400m | 53.69 | Gainesville, FL (USA) | 18.04.1998 | | 400m ind. | 54.13 | Blacksburg, VA (USA) | 20.02.2010 | | 600m ind. | 1:28.87 | Blacksburg, VA (USA) | 22.01.2010 | | 800m | 1:57.99 | Oslo (NOR) | 29.07.2005 | | 800m ind. | 2:01.06 | Boston, MA (USA) | 28.02.2004 | | 1000m | 2:36.47 | Nice (FRA) | 09.07.2001 | | 1000m ind. | 2:47.76 | Blacksburg, VA (USA) | 23.01.2010 | | 1500m | 4:16.04 | Atlanta, GA (USA) | 19.05.2000 | | Mile | 4:40.82 | Philadelphia, PA (USA) | 29.04.2000 | | Mile ind. | 4:40.92 | Fayetteville, AR (USA) | 12.02.2000 | | Sprint Medley 1600m | 3:37.16 | Philadelphia, PA (USA) | 29.04.2006 | | 4x1500m | 18:03.28 | Gainesville, FL (USA) | 25.03.2005 |
| Season's BestsNo season's bests available. |
World RankingsNot ranked currently. | | Year | Result | Venue | Date |
|---|
| 1998 | 53.69 | Gainesville, FL (USA) | 18.04.1998 | | 2005 | 54.24 | Knoxville, TN (USA) | 16.04.2005 | | 2007 | 54.43 | Knoxville, TN (USA) | 13.04.2007 |
| Year | Result | Venue | Date |
|---|
| 1996 | 2:06.66 | Tempe, AZ (USA) | 06.04.1996 | | 1997 | 2:01.42 | Indianapolis, IN (USA) | 14.06.1997 | | 1998 | 2:00.23 | New Orleans, LA (USA) | 21.06.1998 | | 1999 | 2:02.01 | Linz (AUT) | 26.07.1999 | | 2000 | 1:58.75 | Olympic Stadium, Sydney (AUS) | 25.09.2000 | | 2001 | 1:59.95 | Indianapolis, IN (USA) | 28.07.2001 | | 2002 | 2:05.24 | Palo Alto, CA (USA) | 22.06.2002 | | 2003 | 2:01.71 | Palo Alto, CA (USA) | 22.06.2003 | | 2004 | 1:59.32 | Eugene, OR (USA) | 19.06.2004 | | 2005 | 1:57.99 | Oslo (NOR) | 29.07.2005 | | 2006 | 1:59.10 | Eugene, OR (USA) | 28.05.2006 | | 2007 | 1:59.07 | Icahn Stadium, New York, NY (USA) | 02.06.2007 | | 2008 | 1:59.82 | Ponce (PUR) | 17.05.2008 | | 2009 | 1:59.96 | Olympiastadion, Berlin (GER) | 17.08.2009 | | 2010 | 2:00.45 | Kingston (JAM) | 01.05.2010 | | 2011 | 2:10.20 | National Stadium, Kingston (JAM) | 07.05.2011 | | 2012 | 2:03.98 | Indianapolis, IN (USA) | 16.06.2012 |
| Year | Result | Venue | Date |
|---|
| 2001 | 2:36.47 | Nice (FRA) | 09.07.2001 |
| Year | Result | Venue | Date |
|---|
| 1999 | 4:16.11 | Athens, GA (USA) | 16.05.1999 | | 2000 | 4:16.04 | Atlanta, GA (USA) | 19.05.2000 | | 2001 | 4:34.21 | Atlanta, GA (USA) | 18.05.2001 | | 2002 | 4:39.38 | Knoxville, TN (USA) | 12.04.2002 | | 2003 | 4:33.13 | Knoxville, TN (USA) | 11.04.2003 | | 2004 | 4:22.74 | Knoxville, TN (USA) | 09.04.2004 | | 2008 | 4:26.60 | Gainesville, FL (USA) | 05.04.2008 | | 2009 | 4:31.47 | Knoxville, TN (USA) | 10.04.2009 | | 2010 | 4:18.55 | Des Moines, IA (USA) | 24.04.2010 |
| Year | Result | Venue | Date |
|---|
| 2000 | 4:40.82 | Philadelphia, PA (USA) | 29.04.2000 | | 2004 | 4:46.58 | Philadelphia, PA (USA) | 24.04.2004 |
| Year | Result | Venue | Date |
|---|
| 2006 | 3:37.16 | Philadelphia, PA (USA) | 29.04.2006 |
| Year | Result | Venue | Date |
|---|
| 2005 | 18:03.28 | Gainesville, FL (USA) | 25.03.2005 |
|
