SMART Diamond Treasure goes up in weight and distance to contest the seventh event at Sha Tin today but the exciting youngster can notch up a hat-trick of victories this season. Trainer David Oughton has started his English four-year-old in one race down the straight 1,000 metres and the other over the minimum trip on the equitrack and had the pleasure of leading him in twice. Looking less than 100 per cent fit, he won gamely down the straight course and then blazed home in his first equitrack outing in a course record time, looking every inch a horse heading for better things. The second outing of the season has helped bring Diamond Treasure to peak fitness but he must shoulder 140 pounds today and go over 1,400 metres for the first time. Despite the excellence of his last win and the determination of his first effort this season, punters are entitled to reasonable odds on him today as he could be be declared ''over the line''. He has handled 135 pounds previously and gives the indication that he could be a weight-carrier but the combination of both will pose something of a problem. However, his excellent form to date and the clear impression given that he is a progressive type suggests he is the one to be in this full field of 14. Diamond Treasure has been given ample time to find out what racing is about and the careful handling of him in his griffin year last season - and only two starts to date this campaign - should continue to pay excellent dividends for connections. As we move towards the back end of the present season, horses such as Diamond Treasure will be running more and more into gallopers who have seen a fair bit of wear and tear. There are a number in this field who have seen plenty of action already. Wonderful Treasure may well prove hardest for Diamond Treasure to beat, if he follows on from his first-up run. Gambled-on and sent off at 5-1, Wonderful Treasure was thereabouts for much of the 1,235-metre trip at the Valley but may be better off over 1,400 metres at Sha Tin. Tony Cruz takes over from Darren Gauci and Wonderful Treasure, who finished fourth to On The Double on the Valley turf, has improved and he will be suited by the trip. Cheguei is blinkered for the first time and if regular rider Brent Thomson can overcome the bad outside draw of 13, this fellow could be involved in the finish.