By Terrence Voon

FIRST, it was the national table tennis team manager Antony Lee. Then, it was head coach Liu Guodong.

Now, the future of Singapore's Olympic heroine Feng Tianwei has also been thrown into doubt - along with Singapore's chances of retaining their silver medal at the 2012 London Games.

Feng, 21, who was discovered by Liu in 2006, was the best player in the women's table tennis team when they won a historic silver at the Beijing Games in August.

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