LONDON - Teenage diving sensation Tom Daley, one of Britain's best London Olympic prospects, found himself at the center of a row over fears media work could harm his chances of winning a medal.

Daley has become a poster boy for the Games, which take place in just more than five months' time.

But British Diving's performance director, Alexei Evangulov, warned the 17-year-old must match the preparations of his Chinese rivals, who he said "train three times harder", if he was to be on the podium.