Did you hear how an American judoku made a hash of his Olympics?

The Olympic Games has just had its first in-competition failed drugs test. And it is a really unfortunate one, if true.

Up to now there have been four expulsions from London 2012 for drugs but they were all caught in pre-Olympic tests, with the results only coming out once the Games had begun.

But now we have the first athlete caught at the Games and it is a very unfortunate story, if true. American judoka Nick Delpopolo competed in the 73kg category and finished seventh after winning two fights and losing two fights.

But the testers found marijuana in his system on July 30 and he has now been removed from the final result.

The American is going with the ‘I don’t know what I was eating’ defence, claiming that his positive test was "caused by my inadvertent consumption of food that I did not realize had been baked with marijuana".

The dodgy, drug-laced food was consumed before he left the US for London but it was picked up by the testers and he now faces some sort of a sanction for the prohibited substance in his blood.

"I apologize to U.S. Olympic Committee, to my teammates, and to my fans, and I am embarrassed by this mistake," he said in a statement released by the United States Olympic Committee. "I look forward to representing my country in the future, and will rededicate myself to being the best judo athlete that I can be."

We think, in light of some of the performances we have seen, that it would be most odd if this almost comical failed test proves to be the only one of London 2012.