Medic Power established his credentials emphatically at Sha Tin on Sunday as one of the rising star sprinters and today it will be the turn of Sacred Kingdom and Lucky Baby in the Arculli Trophy (race eight). The event, named in honour of the past chairman of the Jockey Club, Ronald Arculli, is a Class One handicap and Sacred Kingdom scrambles in to the rating band 20 pounds below topweight Natural Blitz. He is therefore handicapped to carry the featherweight of 113 pounds, but Danny Nikolic will ride the Encosta De Lago gelding two pounds over at 115. In the same race, Danny Shum Chap-shing has sanctioned the return to action of his impressive Lucky Baby, a hulking sprinter by the Marscay stallion Rocket To Mars. Lucky Baby has been freshened up since his fourth to Absolute Champion in the Chairman's Sprint Prize over 1,200m on March 4, when given his first try in the top grade and was obviously far from disgraced. The difference between the pair today is 10 rating points and therefore 10 pounds, half of which was accrued by Lucky Baby for his fourth to the world's top-rated sprinter at weight-for-age last start. And that's probably the whole ball game. Ten pounds is a substantial difference to put between two such nice young horses. The one thing punters are taking on trust with Sacred Kingdom is that he will handle 1,200m around a bend with the same aplomb as he runs 1,000m down the straight, where no such doubts exist with Lucky Baby. Early markets have separated the pair much too widely relative to their form, with Sacred Kingdom being a $17 favourite and Lucky Baby somewhat underrated at $82.