China\'s Liu Xiang charged to victory in the 110 metres hurdles, holding off a star-studded field to equal the world record with a wind-aided 12.87sec run in the Diamond League here on Saturday. Liu, the 2004 Olympic gold medallist, blasted out of the blocks and led from start to finish with the help of a strong tailwind measured at +2.4 metres per second. Because of the tailwind, Liu does not get a share of the world record, which is held by Cuba\'s Dayron Robles. American Aries Merritt finished second in 12.96, while Jason Richardson was third in 13.11 in a field that boasted athletes holding five of the top six times in the world this year. Liu bested his world-leading time of 12.97 from earlier in the year but, unlike on Saturday, that was achieved without the aid of a tailwind.