"We cannot send any replacements for the two athletes now, but we will field a relay team in Japan, " he said.

BBC: India: Two more athletes fail doping test

The 20-year-old Agnel, just a day after swimming an amazing anchor leg in leading France to victory in the men's 4x100 meter free style relay, routed the field in the 200-meter freestyle.

CNN: Olympics: Young stars winning swimming golds

Kuske actually started his sporting life as a track and field athlete of some note, claiming a bronze in Germany's 4x100m relay squad at the 1998 world junior championships in Annecy in France.

CNN: Better than Bolt? The fastest men on ice

Following an injury-plagued summer, the widely hyped track-and-field star not only botched the baton exchange during the men's 4x100 relay semi-final, but he failed to qualify for the 100-meter final, much less medal, throwing his marketability into question.

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