Men's 4x400 Metres Relay Heats at 2012 Olympics in London

South Africa's Oscar Pistorius holds his head in his hands after his teammate Ofentse Mogawane crashes out in the Men's 4x400 Metres Relay Heats on the seventh day of the Athletics in the Olympics stadium at the London 2012 Summer Olympics on August 9, 2012 in London. UPI/Hugo Philpott