IT may only be a Class Six event round the minimum equitrack sprint of 1,030 metres but tomorrow's opening race looks to be quinella-sent for trackwatchers over the last few weeks. During this period there looks to have been a fair bit of improvement from Kenny Kam's Sure Day and from Alex Wong Yu-on's Niagara Falls. Yesterday they confirmed there well being with a couple of pieces of contrasting work which just goes to show that you don't have to be a slave to the clock. Sure Day worked a fair bit faster and harder than Niagara Falls, coming home in one minute, 19.5 seconds under Johnny Ho. For Niagara Falls, who has finally been showing in his races the speed he'd always demonstrated in his work, there was just a gentle potter round under Alan Munro, notching a comfortable 56.0 seconds for his 800-metre piece. But the impression from both was that they had trained on well from their encouraging last-start efforts. Sure Day in particular will benefit from the drop back in distance, patently failing to stay 1,800 metres last time but showing good speed and a fair bit more strength in the run than on previous occasions. Brian Kan Ping-chee's Green Peace looks the other horse to note from his work and his races for tomorrow night's opener. He went strongly for Felix Coetzee yesterday morning and looks as if he will be ideally suited by the minimum equitrack sprint distance. A combination of Sure Day, Niagara Falls and Green Peace will surely get the quinella money. Coetzee was also noted putting a solid piece into Kan's Fairmount who ran significantly better at the last meeting before Christmas when pushed up to 1,800 metres. He came home well to the line yesterday morning and is progressing along the kind of lines which could see him oblige in a Class Five event around a mile to 2,000 metres. Kan's certainly not hanging around with his promising young Irish recruit Grassland Star who is still only two but has already run against older horses, conceding weight to some of them. Yesterday he was back at the track clocking a 1:20.9 for his 1,200-metre hitout. It could well be a mistake to overlook City Raider in tomorrow's sixth event, at least as a tierce or even quinella proposition. It is a very big jump in grade for him but he has never looked better in himself. He is spot on.