London Olympics | Hurdles

Australia’s Sally Pearson, left, defeats Nevin Yanit of Turkey, Kellie Wells and Dawn Harper, both of the United States, to win the gold medal in the 100-meter hurdles. Harper won the silver and Wells won the bronze.  (Wally Skalij / Los Angeles Times)

Australia’s Sally Pearson falls to the track after winning the gold medal in the 100-meter hurdles.  (Wally Skalij / Los Angeles Times)

Kellie Wells, left, (bronze) and Dawn Harper, center, (silver) celebrate winning medals after crossing the finish line of the 100-meter hurdles.  (Wally Skalij / Los Angeles Times)

LoLo Jones of the United States competes in the women’s 100m hurdles semifinals. In the finals, she finished in fourth place, out of medal contention.  (Olivier Morin / AFP / Getty Images)

China’s Liu Xiang, center, falls between Hungary’s Balazs Baji, left, and Poland’s Artur Noga duing a men’s 110-meter hurdles heat.  (Martin Meissner / Associated Press)

Cyclists in China motor past a screen showing Liu Xiang after his fall in a men’s 110-meter hurdles heat at the London Olympics. It was reported that Chinese at home shed tears after the former world-record holder crashed into the first hurdle.  (Andy Wong / Associated Press)

Jason Richardson of the United States won his heat in the men’s 110m hurdles, qualifying for the semifinals.  (Eric Feferberg / AFP / Getty Images)