Patience is an essential element in extracting the best out of any horse and there has been an abundance of that attribute shown by trainer Tony Cruz with Zero In. This talented son of 1994 Golden Slipper (Aus-G1) winner Danzero showed plenty of promise in his work and trials when first arriving in Hong Kong in March of last year. For whatever reason, the quality of his work regressed significantly. He finished second last on September 9 over 1,400 metres behind Miracles and was beaten a long way from home. A month later he showed a little more promise when second in a dirt trial, and then was put away for a month with no work. On his next outing he displayed considerable improvement when sixth to First Among Equals over 1,000 metres. On his most recent run on Boxing Day he produced his best performance when second to Agility over 1,200 metres, with a further three lengths back to Tennessee. The form now reads well, with the third-placed runner scoring earlier this week at Happy Valley. And Zero In is going from strength to strength in his work. His 800 metres gallop timed on Thursday with Flying Eagle was excellent. Felix Coetzee worked him under a tight hold down the stretch where he clocked 22.7 seconds for the final quarter. He appears to have made even more progress since his latest outing, and looks yet another future winner for the Cruz-Coetzee combination. Mystic Force, from the same stable, has also caught the eye in his work recently. The son of Kaapstad started work only a month ago, and with a handful of gallops has already shown some potential. He clocked 50.6 seconds over 800 metres under the firm grip of his track rider and although a long way off his peak, there are some positive early signs. Derek Cruz's progressive galloper My Choice is another that continues to work well. Anton Marcus was on board for his riverside gallop over 800 metres on Thursday, putting the horse through a nice piece of work in which he clocked 53.4 seconds. The gelding remains in outstanding order and clearly has the potential to hold his form with his relaxed attitude. It was no surprise to see the only dirt trial at Sha Tin won by John Size's Dr More, who had a superior rating to the majority of his rivals. He worked home well under Robbie Fradd to hold on and win the heat by a narrow margin. Ones To Note: Zero In, Mystic Force, My Choice.