|Representing the United States|
|2011 Daegu||4×400 m relay|
|World Indoor Championships|
|2008 Valencia||4x400 m relay|
|2010 Doha||4x400 m relay|
Greg Nixon (born September 12, 1981) is an American sprinter who specialises in the 400 meters. His success has come mostly in the 4×400-meter relay and he is a two-time World Indoor champion in the event.
His first major medal came at the Athletics at the 2007 Pan American Games, where he led off the American relay team to win a silver medal. At the 2008 IAAF World Indoor Championships, Nixon finished third in his 400 m heat with a time of 47.64. He also won a gold medal in the 4 x 400 m relay.
At the 2010 IAAF World Indoor Championships, Nixon won a second gold medal in the 4 x 400 m relay. He ran a 400 m personal best of 45.08 seconds at the Drake Relays, beating runner-up Renny Quow by some distance.
- "Men's 4x400 m relay". IAAF. March 14, 2010. Retrieved March 14, 2010.
- Dunaway, James (2010-04-25). Cantwell opens with 21.69m effort in Des Moines – Drake Relays report. IAAF. Retrieved on 2010-04-25.
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