Women's 100M Hurdles

Sally Pearson of Australia celebrates after winning the gold medal in the Women's 100m Hurdles Final on Day 11 of the London 2012 Olympic Games at Olympic Stadium on August 7, 2012 in London, England. (Photo by Jamie Squire/Getty Images)

Sally Pearson of Australia hugs Kellie Wells of the United States after winning the gold medal in the Women's 100m Hurdles Final on Day 11 of the London 2012 Olympic Games at Olympic Stadium on August 7, 2012 in London, England. (Photo by Stu Forster/Getty Images)

Sally Pearson of Australia celebrates after winning the gold medal in the Women's 100m Hurdles Final on Day 11 of the London 2012 Olympic Games at Olympic Stadium on August 7, 2012 in London, England. (Photo by Streeter Lecka/Getty Images)

Sally Pearson of Australia celebrates after winning the gold medal in the Women's 100m Hurdles Final on Day 11 of the London 2012 Olympic Games at Olympic Stadium on August 7, 2012 in London, England. (Photo by Streeter Lecka/Getty Images)

LONDON, ENGLAND - AUGUST 07: Sally Pearson of Australia celebrates after winning the gold medal in the Women's 100m Hurdles Final on Day 11 of the London 2012 Olympic Games at Olympic Stadium on August 7, 2012 in London, England. (Photo by Stu Forster/Getty Images)

LONDON, ENGLAND - AUGUST 07: Sally Pearson of Australia celebrates after winning the gold medal in the Women's 100m Hurdles Final on Day 11 of the London 2012 Olympic Games at Olympic Stadium on August 7, 2012 in London, England. (Photo by Jamie Squire/Getty Images)

Sally Pearson of Australia competes in the Women's 100m Hurdles heat on Day 10 of the London 2012 Olympic Games at the Olympic Stadium on August 6, 2012 in London, England. (Photo by Stu Forster/Getty Images)

Brigitte Foster-Hylton of Jamaica reacts with Lolo Jones of the United States after competing in the Women's 100m Hurdles heat on Day 10 of the London 2012 Olympic Games at the Olympic Stadium on August 6, 2012 in London, England. (Photo by Stu Forster/Getty Images)

Lolo Jones of the United States jumps over a hurdle alongside Phylicia George of Canada in the Women's 100m Hurdles heat on Day 10 of the London 2012 Olympic Games at the Olympic Stadium on August 6, 2012 in London, England. (Photo by Hannah Johnston/Getty Images)

Yuliya Kondakova of Russia, Lolo Jones of the United States and Phylicia George of Canada compete in the Women's 100m Hurdles heat on Day 10 of the London 2012 Olympic Games at the Olympic Stadium on August 6, 2012 in London, England. (Photo by Streeter Lecka/Getty Images)

Dawn Harper of the United States leads the pack in the Women's 100m Hurdles Semifinals on Day 11 of the London 2012 Olympic Games at Olympic Stadium on August 7, 2012 in London, England. (Photo by Streeter Lecka/Getty Images)

Dawn Harper of the United States leads the pack in the Women's 100m Hurdles Semifinals on Day 11 of the London 2012 Olympic Games at Olympic Stadium on August 7, 2012 in London, England. (Photo by Cameron Spencer/Getty Images)

Dawn Harper of the United States leads Alina Talay of Belarus and Shermaine Williams of Jamaica in the Women's 100m Hurdles Semifinals on Day 11 of the London 2012 Olympic Games at Olympic Stadium on August 7, 2012 in London, England. (Photo by Cameron Spencer/Getty Images)

Dawn Harper of the United States competes in the Women's 100m Hurdles Semifinals on Day 11 of the London 2012 Olympic Games at Olympic Stadium on August 7, 2012 in London, England. (Photo by Stu Forster/Getty Images)

Dawn Harper of the United States leads Shermaine Williams of Jamaica in the Women's 100m Hurdles Semifinals on Day 11 of the London 2012 Olympic Games at Olympic Stadium on August 7, 2012 in London, England. (Photo by Stu Forster/Getty Images)

Sally Pearson of Australia leads Jessica Zelinka of Canada in the Women's 100m Hurdles Semifinals on Day 11 of the London 2012 Olympic Games at Olympic Stadium on August 7, 2012 in London, England. (Photo by Streeter Lecka/Getty Images)

Sally Pearson of Australia leads Tiffany Porter of Great Britain and Jessica Zelinka of Canada in the Women's 100m Hurdles Semifinals on Day 11 of the London 2012 Olympic Games at Olympic Stadium on August 7, 2012 in London, England. (Photo by Stu Forster/Getty Images)