Kenya's gold medalist David Lekuta Rudisha celebrates after winning the men's 800 final at the athletics event during the London 2012 Olympic Games on August 9, 2012 in London. Photo/AFP

Kenya's David Lekuta Rudisha and Kenya's Timothy Kitum celebrate after the men's 800m final at the athletics event during the London 2012 Olympic Games on August 9, 2012 in London. Photo/AFP

Kenya's David Lekuta Rudisha celebrates with silver medalist Kenya's Timothy Kitum after breaking the world record in the men's 800 final at the athletics event during the London 2012 Olympic Games on August 9, 2012 in London. Photo/AFP

Kenya's David Lekuta Rudisha celebrates after winning and breaking the world record in the men's 800m final at the athletics event during the London 2012 Olympic Games on August 9, 2012 in London. Photo/AFP

Kenya's gold medallist David Lekuta Rudisha celebrates after winning the men's 800 final at the athletics event during the London 2012 Olympic Games on August 9, 2012 in London. Photo/AFP