The British were supposed to dominate the Olympic road race in London, ushering sprint ace Mark Cavendish over the lumpy course in the Surrey countryside and delivering him to the finish at Buckingham Palace. Instead, Kazakh rider Alexander Vinokourov boldly broke away for gold. Four years later, things could be even more unpredictable when riders line up at famed Copacabana Beach on the first full day of the Rio Olympics. More...