Workers cover up the BMX track as rain delay the start of the BMX Supercross World Cup at the Olympic Park's BMX Track in London, Saturday, Aug. 20, 2011. The course will host the London 2012 Olympic ... more 
Workers cover up the BMX track as rain delay the start of the BMX Supercross World Cup at the Olympic Park's BMX Track in London, Saturday, Aug. 20, 2011. The course will host the London 2012 Olympic BMX competition next year. (AP Photo/Sang Tan) less 
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Associated Press | Photo By Sang Tan
Sat, Aug 20, 2011 9:23 AM EDT