Liu's comeback still uncertain

Exactly when China's star hurdler Liu Xiang will return to competition remains a mystery as his injured right foot is still not yet ready for the wear and tear of sprinting.

"Liu will go for another check at the end of this month and if his foot is not completely cured, we won't let him train in spiked shoes and his return will be postponed," Liu's coach Sun Haiping, who said the injury was about 90 percent better, told China Daily.

"All of our efforts are to get Liu back to normal, so we won't push him hard to take part in competition," he added.