Olympics Day 13 – Athletics

Ofentse Mogawane of South Africa receives assistance after a collision during the heats of the 4x400 relay. (Feng Li/Getty Images)

Ofentse Mogawane of South Africa receives assistance after a collision during the heats of the 4×400 relay. (Feng Li/Getty Images)

LONDON, ENGLAND – AUGUST 09: Ofentse Mogawane of South Africa receives assitance during the Men’s 4 x 400m Relay Round 1 heats on Day 13 of the London 2012 Olympic Games at Olympic Stadium on August 9, 2012 in London, England. (Photo by Feng Li/Getty Images)