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Britain's Shanaze Reade (R) falls while Nicole Callisto of Australia (L) and Lieke Klaus of the Netherlands (C) race past during the semi-final heat in the women's BMX finals at the 2008 Beijing Olympic Games at the Laoshan BMX venue on August 22, 2008. [Agencies]

Defending world champion, also the Games' favorite Shanaze Reade of Britain, who had a heavy crash in the first run in the semifinal, suffered the same misfortune in the final and did not finish the race.

"I put everything into this and I couldn't have done any more," said the disappointed British.

Chinese Ma Liyun, the host's solo contender who competed in her first Olympics with a wild card, only finished 7th in the first heat of the semifinals.