Anyone seeing the John Moore-trained Dim Sum work for the first time at Sha Tin yesterday would not be the least surprised to learn the British private purchase is a Group One winner. In fact, the villain of the 50-1 upset in the Chairman's Sprint Prize looked every inch a topline sprinter with a dazzling display to land the first of two barrier trials over 1,050 metres on the all-weather track. Dim Sum, handled by his Chairman's Sprint Prize partner James Winks, bounced straight to the front, but was headed in the middle stages by the David Ferraris-trained Chater Power (Eddie Lai Wai-ming). But as soon as heads were turned for home, Dim Sum quickened up under minimal urging from Winks and hit the line strongly to score by 51/4 lengths. Chater Power boxed on well for second, with dual Group One winner Inspiration, a stablemate of Dim Sum, coming in a further 11/4 lengths away in third place. Inspiration tended to race too keenly in the middle stages so Beadman did the sensible thing and held him together and did not allow him to come off the bridle in the final 200m. A third Moore-trained galloper, One World (Zac Purton), was given a quiet time, finishing eighth of the 10 runners. All three gallopers are scheduled to contest the Group Two Sprint Cup over 1,200m at Sha Tin on Friday week.