BEIJING - China's Olympic and world champion high hurdler Liu Xiang is unlikely to light the cauldron at the opening ceremony of the Beijing Olympics because he does not have time, his father and his coach have said.

China's NBA super star Yao Ming (left) and Olympic 110m hurdles champion Liu Xiang attend the launching ceremony of the plan for one-year countdown to Beijing Olympics celebration in Beijing August 8, 2007. [Xinhua]

As China's best hope of winning an athletics gold medal in August, the 110 meters hurdles world record holder was one of the favorites to perform the prestigious task of running the final leg of the torch relay.

"He has such weighty responsibility on the track, he will not be the one to light the flame," Thursday's Beijing Youth Daily quoted his father Liu Xuegen as saying.

Liu's coach Sun Haiping agreed that the 24-year-old was unlikely to find the time for the lengthy rehearsals given how tight their training schedule was.

"The opening ceremony is too significant, so there are lots of rehearsals -- at least six times as far as I know, and they last a long time," he told the paper.

"Especially the last rehearsal, the lighter of the cauldron must stay there for the whole day of Aug 7."

However, Sun stressed Liu would definitely play an important role in delivering the flame to the Bird's Nest National Stadium by running at least one leg of the torch relay.