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BERLIN - AUGUST 18: (L-R) Brigitte Merlano of Colombia, Michelle Perry of United States and Asuka Terada of Japan compete in the women's 100 Metres Hurdles Heats during day four of the 12th IAAF World Athletics Championships at the Olympic Stadium on August 18, 2009 in Berlin, Germany.

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United States' Michelle Perry, left, and Japan's Asuka Terada compete in a Women's 100m hurdles first round heat at the World Athletics Championships in Berlin on Tuesday, Aug. 18, 2009.

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US Michelle Perry, left, and Anay Tejeda from Cuba, right, compete during the 100 meters hurdles women race at the IAAF World Athletics Tour Golden Spike meeting in Ostrava, Czech Republic, Wednesday, June 17, 2009. Perry came in second place.

Michelle Perry (R) of the U.S. wins the women's 100 meter hurdles as Damu Cherry (69) of the U.S. takes second during the Prefontaine Classic track meet in Eugene, Oregon June 7, 2009.

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Michelle Perry, right, and Damu Cherry hit the finish line to tie for the win in the women's 100-meter hurdles with a time of 12.74 seconds during the Prefontaine Classic track and field meet in Eugene, Ore. , Sunday, June 7, 2009.

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United States' Michelle Perry competes in a Women's 100m hurdles first round heat at the World Athletics Championships in Berlin on Tuesday, Aug. 18, 2009.

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United States' Michelle Perry reacts after a Women's 100m hurdles first round heat at the World Athletics Championships in Berlin on Tuesday, Aug. 18, 2009.

Michelle Perry of the U.S. checks her time after the women's 100 metres hurdles third heat during the world athletics championships at the Olympic stadium in Berlin, August 18, 2009.

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American athlete Michelle Perry, specialist in the 100m hurdles and heptathlon is seen during a press conference in Monaco, Monday, July 27, 2009, on the eve of the Herculis International Athletics Meeting, at the Louis II Stadium in Monaco.

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American athlete Michelle Perry, specialist in the 100m hurdles and heptathlon is seen during a press conference in Monaco, Monday, July 27, 2009, on the eve of the Herculis International Athletics Meeting, at the Louis II Stadium in Monaco.

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Jamaica's Delloreen Ennis-London (R), Michelle Perry from US (L) and Cuba's Anay Tejeda compete in the women's 100 metres hurdles event during the IAAF World Athletics Tour Zlata Tretra (Golden Spike) trophy in Ostrava on June 17, 2009.

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Michelle Perry from the US waits on the blocks in the women's 100 metres hurdles event during the IAAF World Athletics Tour Zlata Tretra (Golden Spike) trophy in Ostrava on June 17, 2009.

Michelle Perry of the U.S. celebrates winning the women's 100 meter hurdles during the Prefontaine Classic track meet in Eugene, Oregon June 7, 2009.

AP Photo 5 months ago

Michelle Perry collapses to the track smiling after seeing her time in the women's 100-meter hurdles during the Prefontaine Classic track and field meet in Eugene, Ore. , Sunday, June 7, 2009. Perry tied with Damu Cherry to win the event with a time of 12.74 seconds.

AP Photo 4 months ago

Dawn Harper of the US, seen on the way to winning the women's 100m hurdles, with Michelle Perry of the US on the right, during the AF Golden League athletics meeting at the Stade de France in Saint-Denis, north of Paris, Friday, July 17, 2009.

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USA's Dawn Harper (L) reacts as she crosses first the finish line of the women's 100m hurdles event of the Paris IAAF Golden League meeting followed by USA's Michelle Perry on July 17, 2009 at the Stade de France in Saint-Denis, near Paris.

AP Photo 4 months ago

Dawn Harper of the US, seen on the way to winning the women's 100m hurdles, with Michelle Perry of the US on the right, during the AF Golden League athletics meeting at the Stade de France in Saint-Denis, north of Paris, Friday, July 17, 2009.