Floyd Landis has already begun the fight to clear his name even before the positive test for excessive levels of testosterone which is likely to lead to the loss of his Tour de France title has been verified.

His B sample has yet to analysed to confirm the result from his A sample, although it would be a huge surprise if there was significant difference between the two.

However, the 30-year-old Pennsylvanian appears determined to challenge the evidence which will almost certainly cost him the victory he secured in Paris last weekend, his job and possibly end his career.

Landis has hired Spanish doctor Luis Hernandez, who has helped other riders who returned test results showing high levels of testosterone.

'In hundreds of cases, no-one's ever lost one,' Landis said.