South Africa’s Oscar Pistorius shakes hands with Dominican Republic’s Luguelin Santos after their men’s 400m round 1 heats at the London 2012 Olympic Games at the Olympic Stadium

Oscar Pistorius (right) shakes hands with the Dominican Republic's Luguelin Santos after their men's 400 meter heat. (REUTERS/Lucy Nicholson)

Oscar Pistorius (right) shakes hands with the Dominican Republic’s Luguelin Santos after their men’s 400 meter heat. (REUTERS/Lucy Nicholson)

South Africa’s Oscar Pistorius (R) shakes hands with Dominican Republic’s Luguelin Santos after their men’s 400m round 1 heats at the London 2012 Olympic Games at the Olympic Stadium August 4, 2012. REUTERS/Lucy Nicholson (BRITAIN – Tags: OLYMPICS SPORT ATHLETICS)