Jamaica’s Veronica Campbell-Brown, Sherone Simpson, Shelly-Ann Fraser-Pryce and Kerron Stewart pose after they won silver in the women’s 4x100m relay final during the London 2012 Olympic Games

Jamaica’s Veronica Campbell-Brown, Sherone Simpson, Shelly-Ann Fraser-Pryce and Kerron Stewart pose after they won silver in the women’s 4x100m relay final during the London 2012 Olympic Games. Reuters pictures.

Jamaica’s Veronica Campbell-Brown, Sherone Simpson, Shelly-Ann Fraser-Pryce and Kerron Stewart (L-R) pose after they won silver in the women’s 4x100m relay final during the London 2012 Olympic Games at the Olympic Stadium August 10, 2012. REUTERS/Dylan Martinez (BRITAIN – Tags: OLYMPICS SPORT ATHLETICS)