AP Photo 5 months ago

Jamaica's Usain Bolt, second from left, crosses the finish line ahead of USA's Walter Dix, left, Brazil's Bruno de Barros, second from right, and Trinidad's Rondel Sorrillo to win the Men's 200m final at the World Athletics Championships in Daegu, South Korea, Saturday, Sept. 3, 2011.

Getty Images 5 months ago

Jamaica's Usain Bolt (C) wins gold ahead of US athlete Walter Dix (R) who took silver and France's Christophe Lemaitre who won bronze in the men's 200 metres final at the International Association of Athletics Federations (IAAF) World Championships in Daegu on September 3, 2011.

AP Photo 5 months ago

Jamaica's Usain Bolt, center, crosses the finish line ahead of USA's Walter Dix, left, and Brazil's Bruno de Barros in the Men's 200m final at the World Athletics Championships in Daegu, South Korea, Saturday, Sept. 3, 2011.

Getty Images 5 months ago

Jamaica's Usain Bolt (C) wins ahead of US athlete Walter Dix (2L) and Brazil's Bruno De Barros (R) the men's 200 metres final at the International Association of Athletics Federations (IAAF) World Championships in Daegu on September 3, 2011.

Getty Images 5 months ago

Jamaica's Usain Bolt (R) wins ahead of US athlete Walter Dix (2L) and Jamaica's Nickel Ashmeade (L) in the men's 200 metres final at the International Association of Athletics Federations (IAAF) World Championships in Daegu on September 3, 2011. Dix took silver.

Getty Images 5 months ago

Jamaica's Usain Bolt (2R) leads ahead of Jamaica's Nickel Ashmeade (L), US athlete Walter Dix (2L) and Brazil's Bruno De Barros (R) to win gold in the men's 200 metres final at the International Association of Athletics Federations (IAAF) World Championships in Daegu on September 3,...

AP Photo 5 months ago

USA's anchor Walter Dix, center, looks back after Darvis Patton, not in photo, drops the baton in the Men's 4x100m relay final at the World Athletics Championships in Daegu, South Korea, Sunday, Sept. 4, 2011.

AP Photo 5 months ago

USA's anchor Walter Dix (1073) runs as his teammate Darvis Patton (1110) drops the baton in the Men's 4x100m relay final at the World Athletics Championships in Daegu, South Korea, Sunday, Sept. 4, 2011. At top Jamaica's Usain Bolt (588) and Yohan Blake (587) who took the gold.

Reuters Pictures 5 months ago

Walter Dix of the U.S. gestures after the men's 200 metres final at the IAAF World Athletics Championships in Daegu September 3, 2011. Dix finished second.

Getty Images 5 months ago

(L-R) Panama's Alonso Edward, Jamaica's Mario Forsythe, US athlete Walter Dix and Britain's Christian Malcolm finish their heat in the men's 200 metres semi-final at the International Association of Athletics Federations (IAAF) World Championships in Daegu on September 2, 2011.

Getty Images 5 months ago

(L/R) Jamaica's Mario Forsythe, US athlete Walter Dix and Britain's Christian Malcolm compete in the men's 200 metres semi-finals at the International Association of Athletics Federations (IAAF) World Championships in Daegu on September 2, 2011.

Getty Images 5 months ago

DAEGU, SOUTH KOREA - SEPTEMBER 02: Walter Dix of the USA sprints to victory in his men's 200 metres semi final during day seven of 13th IAAF World Athletics Championships at Daegu Stadium on September 2, 2011 in Daegu, South Korea.

Reuters Pictures 5 months ago

Mario Forsythe of Jamaica (L) and Walter Dix of the U.S. react after their men's 200 metres semi-final heat at the IAAF World Championships in Daegu September 2, 2011.

Reuters Pictures 5 months ago

Walter Dix of the U.S. runs through a corner next to Mario Forsythe of Jamaica (L) during his men's 200 metres semi-final heat at the IAAF World Championships in Daegu, September 2, 2011.

Reuters Pictures 5 months ago

Walter Dix of the U.S. reacts after the men's 200 metres semi-final heat at the IAAF World Championships in Daegu September 2, 2011.

Reuters Pictures 5 months ago

Walter Dix of the U.S. (C) runs next to Kim Collins of St. Kitts and Nevis (L) and Sibusiso Matsenjwa of Swaziland (R) during their men's 200 metres heat at the IAAF World Championships in Daegu, September 2, 2011.

Getty Images 5 months ago

(L/R) Egypt's Amr Ibrahim Mostafa Seoud, Saint Kitts and Nevis's Kim Collins and US athlete Walter Dix compete in the men's 200 metres heats at the International Association of Athletics Federations (IAAF) World Championships in Daegu on September 2, 2011.

Getty Images 5 months ago

DAEGU, SOUTH KOREA - SEPTEMBER 02: Kim Collins (L) of St Kitts competes with Walter Dix of the USA in the men's 200 metres heats during day seven of 13th IAAF World Athletics Championships at Daegu Stadium on September 2, 2011 in Daegu, South Korea.

Getty Images 5 months ago

(L/R) Egypt's Amr Ibrahim Mostafa Seoud, Saint Kitts and Nevis's Kim Collins, US athlete Walter Dix, Swaziland's Sibusiso Matsenjwa and Germany's Sebastian Ernst compete in the men's 200 metres heats at the International Association of Athletics Federations (IAAF) World Championships in...

Getty Images 5 months ago

(L/R) Saint Kitts and Nevis's Kim Collins, US athlete Walter Dix and Swaziland's Sibusiso Matsenjwa compete in the men's 200 metres heats at the International Association of Athletics Federations (IAAF) World Championships in Daegu on September 2, 2011.

Getty Images 5 months ago

US athlete Walter Dix prepares to compete in the men's 200 metres heats at the International Association of Athletics Federations (IAAF) World Championships in Daegu on September 2, 2011.

AP Photo 5 months ago

Jamaica's Usain Bolt, right, crosses the finish line to win ahead of USA's Walter Dix, center, and Jamaica's Nickel Ashmeade, left, in the Men's 200m final at the World Athletics Championships in Daegu, South Korea, Saturday, Sept. 3, 2011.

AP Photo 5 months ago

USA's Walter Dix, right, and Jamaica's Mario Forsythe, left, compete in a Men's 200m semifinal at the World Athletics Championships in Daegu, South Korea, Friday, Sept. 2, 2011.

Getty Images 5 months ago

Jamaica's Yohan Blake (C) celebrates next to US sprinter Walter Dix (R) after winning gold in the men's 100 metres final at the International Association of Athletics Federations (IAAF) World Championships in Daegu on August 28, 2011. Dix won silver.

AP Photo 5 months ago

Jamaica's Yohan Blake, center, USA's Walter Dix, left, and Saint Kitts and Nevis' Kim Collins pose with their medals during the medal ceremony for the Men's 100m at the World Athletics Championships in Daegu, South Korea, Monday, Aug. 29, 2011. Blake won gold, Dix silver and Collins...