China table tennis coach puts heat on Olympic champ Zhang

BEIJING (Reuters) - The head coach of China's all-conquering men's table tennis team has warned Olympic and world singles champion Zhang Jike to knuckle down at the Asian Games or risk throwing away his chance to defend his gold medal at the Rio Games.

Though the 26-year-old has been virtually untouchable in singles since his 2011 world title in Rotterdam, his lacklustre performances in team events have been a source of frustration for long-serving coach Liu Guoliang.