MICK O'Brien, the astute Australian track man, used to come to Sha Tin every Saturday morning just to watch the grass-testing gallops. O'Brien's contention was that they often throw up future winners and he was spot on as trainers have restricted access to the grass so when they can get on it, they usually make sure they gallop a couple of their horses ready to win. Yesterday it was the John Moore-trained pair of Master Magic and Winning Lad who were sent out to test the grass, and the way that Master Magic flowed to the line under Douglas Whyte, he can be supported with the utmost confidence when next seen out. Master Magic, a griffin with just three runs to his name, led the gallop against the vastly experienced and useful handicapper Winning Lad, who has been in top form for Moore this season. Whyte was about two-lengths clear when he upped the tempo on Master Magic in the straight and while Winning Lad wasn't really asked to chase him by his rider, Patrick Payne, Whyte didn't try to get to the bottom of Master Magic either. Yet Master Magic pulled further and further clear, looking a much improved performer in the process. This gallop follows a serious hitout last week when Master Magic was sent round with the top griffin winner, Victory Mount, who looked so impressive on Queen Elizabeth II Cup day. Master Magic matched Victory Mount all the way to the line on that occasion and first thoughts were that it was because Victory Mount is a lazy worker. On the evidence of yesterday's grass-testing gallop, it could be more because Master Magic is himself becoming a very classy griffin indeed. In other work yesterday, Chris Cheung Ting-pong's promising Perpetual Harmony worked nicely on the bit with stablemate All The Way, who looks to be improving. Moore's Certeza appears to be returning well from a bleeding attack and David Hayes' recent winner, Prince Fortune, looked very well. Moore's Calculation is also returning to form though he may need one run back while Super Boy put in an improved effort for his new trainer, Tony Cruz, appearing to go better than stablemate Fortune World and looking, like so many of the Cruz stable, to have put on condition.