Australia's Sally Pearson crosses the finish line for a gold medal win in the women's 100-meter hurdles final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Tuesday, ... more 

Australia's Sally Pearson crosses the finish line for a gold medal win in the women's 100-meter hurdles final during the athletics in the Olympic Stadium at the 2012 Summer Olympics, London, Tuesday, Aug. 7, 2012.(AP Photo/Mark Baker) less