Top English rider Brett Doyle can make all the difference to Ming River and take this afternoon's sixth event on a mixed turf and dirt card at Sha Tin. There is a strange shape to this Class Six mile event as the difference between the top and bottom of the weight scales is just five pounds. The topweight is carrying just 120 pounds and there is the ridiculous prospect of three jockeys putting up overweight because the top weight is so light. All that is needed is for a clause to be introduced allowing for the weights to be raised after declaration time. This prevents the unedifying spectacle of overweight and allows punters to make precise calculations as to exactly how much their selection is carrying. This crazy situation works very much in Ming River's favour because Doyle has no trouble riding at 115 pounds and, indeed, is a very strong, pugnacious rider at that weight. Others will have to work hard to ride so light and, pound for pound, will not be so vigorous at the bottom end of the scale. Ming River went into the notebook first time out this season when his inexperienced 10-pound claim could not get any racing room until the home straight in the Class Six contest won by Fit For Royalty. By the time Ming River was in the clear, the placegetters had flown and it was left to him to make up good ground into mid-division. In those circumstances it was a creditable run and Ming River has the form from last season which entitles him to plenty of respect in the bottom grade. His best run of the season was when chasing home King Star in a Class Five 1,400-metre event at Sha Tin. The selection should also be at decent odds and Doyle and trainer Derek Cruz have already enjoyed success together, combining for victory with the useful Skase Race. When Ming River showed his best form last season he had Mr Belief 3.75 lengths back in eighth and is now meeting him on 12 pounds worse terms. Mr Belief has appeared to work really well going into this race but he has done that before and could be a trackwork deceiver. This is his last chance to prove otherwise. The meeting generally has a tough feel to it though Chagall should run well in the featured American Club Challenge Cup and is worth win and place support if the odds are there.