Surprises do happen at the Olympics and alongside Britain's major medal chances are a handful of sailors who could, if things go their way, turn the form book on its head.
Sydney gold medallist Iain Percy will compete in the Star class with Andrew Simpson. Percy, 32, who was triumphant in the Finn in 2000, drew a blank in the Star class in Athens with crew Steve Mitchell and goes to Beijing without any decent form to boast about. The pair were third at the 2007 Worlds but were 52nd this year.
Leigh McMillan and Will Howden will race the Tornado catamaran, the last time the class will be used at the Games.
McMillan finished 13th in Athens with crew Mark Bulkeley but reckons he is far better placed to deliver this time. But the pair could only manage eighth at the recent Europeans in Greece and they face stiff competition from Australian star Darren Bundock and his crew Glenn Ashby.
Royal Naval Lieutenant Commander Penny Clark will compete in the Laser Radial, similar to the men's Laser but with a smaller rig. Clark won bronze at the 2006 test event in Qingdao but her recent form has been mixed - she was seventh at the 2008 Worlds and 15th at the Europeans.
Christina Bassadone and Saskia Clark will compete in the women's 470 and are ranked fourth in the world. With these credentials they have a chance of a medal but are prone to inconsistency. They have placed second and third at World Championships since Athens but were 17th this year.
History is against them, too. In the last four decades of Olympic sailing, Britain has only failed to win a medal in two classes - women's windsurfer and women's 470.
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