LIEGE, BELGIUM - JUNE 28: Bradley Wiggins of Great Britain and SKY Procycling rides with his team during a training ride over the final kilometres of stage one of the 2012 Tour de France on June 28, 2012 in Liege, Belgium. (Photo by Bryn Lennon/Getty Images). The 99th Tour de France starts on Saturday with a 6.4km Prologue Time Trail around the streets of Liege.
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US hopefuls down but not out at Tour's 7th st…