THE in-form Brian Kan Ping-chee could provide the key to the third event, the first leg of the Triple Trio, at Sha Tin tomorrow. Kan, still known throughout racing as The Champ due to his four successive training titles in the late eighties and currently joint top of the standings with Patrick Biancone, sends out Grassland Star for the third. Grassland Star showed plenty of dash in a jump out on Monday morning with leading stablemates Medic Star and Flying Supreme before being eased over the last 100 metres and he is ideally suited by a straight 1,000 metres. That was by far and away his best trip in his native Ireland and he has also run very well down the straight at Sha Tin. The maxim 'horses for courses' never applied more than to races over a straight track, because whatever the trip, some horses grow a leg when racing down a straight. Beside Grassland Star, look at Sterling Town. Round a bend he needs upwards of a mile. Down the straight he won the Centenary Cup last season, lowering the colours of the best sprinters in training. Grassland Star should now be at peak fitness after a couple of runs back, his work is good enough and he is dramatically eased in grade. He is used to taking on the very best sprinters in training. Now he is down into Class Two and not a competitive Class Two event by any means. He could also have the best of the draw. As the Sha Tin sandmesh surface continues to degenerate it has become noticeable that at some meetings there is more and more track bias. On Wednesday night the fence seemed to confer an advantage, as it did at the meeting before as the centre of the course was cut up and sandy. But now racing is out to the 'C' course which means the cut up part of the track is next to the rails extending outwards for some five or six horses. So it could just be that the virgin ground, down the straight anyway, is right out wide. Grassland Star is drawn out in barrier 12 and is well positioned to exploit any potential track bias. The boom sprinter Winning Spirit holds his form well in the mornings. He worked in a much more settled fashion earlier this week and don't worry that he was beaten last time. He could well bounce back and is another to consider as a banker in this opening leg of the Triple Trio. Green Supreme has to go in there on form and his apprentice Eden Cheung rides well down the straight. Chalky Boat is another straight track specialist. His best form was down the straight in Melbourne and he raced very well down the Sha Tin 1,000-metre chute last season when third to Regal Ridge and Pine Fame. The Hermes Cup is a tough one to call for Triple Trio devotees. Able Monarch continues to work really well but this is a fair bit harder than the contest he won last time out. Lawrie Fownes appears to have brought Kadbridge right back to his best. The veteran handicapper looked in tip-top condition on Tuesday morning as did Ivan Allan's consistent Quick Action. David Oughton's Chagall really flew in his gallop on the grass on Tuesday but like Able Monarch this represents a much tougher race than he won last time and, with the brilliant Mick Kinane likely to put up two pounds overweight, he will also be racing from seven pounds out of the handicap. There has been good work from Each Own Way going into the sixth, the final leg of the Triple Trio, as there has from topweight Racing Ace. Each Own Way's stablemate Walk Big was one of the track stars throughout last season but didn't really live up to his work in his races. This time round he has come back into training working even better than ever. He is worth keeping safe in the fifth, the last leg of the Double Trio.