1) "I did not knowingly take a banned substance."
2) "The sample must be contaminated."
3) "I had sex 5 times the night before & a sixpack of beers. That musta elevated my levels." (famously used by US sprinter Dennis Mitchell)
4) "My competitors must have contaminated my toothpaste." (successfully argued by German distance runner Dieter Baumann
go here for the story - http://news.bbc.co.uk/sport1/hi/athl...cs/2180907.stm
5) "They must have switched my sample with somebody else's"
I reckon he'll go for 1) or 3)
2) "The sample must be contaminated."
3) "I had sex 5 times the night before & a sixpack of beers. That musta elevated my levels." (famously used by US sprinter Dennis Mitchell)
4) "My competitors must have contaminated my toothpaste." (successfully argued by German distance runner Dieter Baumann
go here for the story - http://news.bbc.co.uk/sport1/hi/athl...cs/2180907.stm
5) "They must have switched my sample with somebody else's"
I reckon he'll go for 1) or 3)

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