International sale graduate Dynamic Fun made it three on end last night to loom as a potential Hong Kong Derby prospect but neither his trainer nor his jockey were talking him up. Only a month ago, some in Hong Kong racing wanted to suggest that champion trainer John Size's abilities did not extend to developing a sales horse from scratch. Dynamic Fun's winning run has put paid to that theory but Size was not ruling the Derby in or out after last night's 1.75 lengths win. 'I suppose you can't rule out those sorts of races but he has won a Class Two tonight off a rating of 79 - he'll need to go considerably higher to get into the Derby let alone be a chance,' Size said. 'Still, we'll see how he's racing when the time comes.' In adding his first win at Happy Valley to his earlier victories on the dirt and then over 1,800 metres on the Sha Tin turf, Dynamic Fun has collected three distinctly different successes but in much the same way. 'I let him run along again in front,' jockey Shane Dye said. 'But I don't think there was anything left tonight as there was in the other two wins. He has kept improving to do what he has done but he was spent at the finish this time.' Ricky Yiu Poon-fie, on the other hand, was more excited about his young sprinter Danhero's third straight win than he was about the first or second. 'Three in a row and that was the most impressive,' Yiu said after Glyn Schofield piloted the gelding to victory in the seventh. 'With the pace on there, he showed a great turn of foot tonight.' Once again it was the Happy Valley 1,000-metre course for Danhero and Yiu said he was growing less committed to changing that. 'I had planned to step him out over a bit longer and I'm sure he will run a strong 1,200 metres. Actually, he ran 1,200 metres last season when he wasn't in the form he's in now,' Yiu said. 'But I don't know - if we can keep turning up for 1,000 metres here and getting the winner's cheque, why change? The way he won tonight, we could be looking at four in a row.' Schofield had earlier won for Sean Woods on Classic Choice In the second race, continuing the gelding's good form. 'I didn't think he finished off as well as he should have last time,' Woods said. 'But today he got a good gallop in the race and was always travelling well. I had my doubts about him but I can't fault the way he did the job tonight.' Top young British rider Jamie Spencer continued his roll in the saddle with a win on Yacht Master for Dennis Yip Chor-hong in the fourth and a dead-heat on New Planet for Francis Lui Kin-wai in the sixth but will be missing from action until after February 16 after getting a second careless riding ban. 'It's bad luck. Yacht Master changed his legs at the winning post the first time as I was coming over and came in a bit quick,' Spencer said. 'At least I managed a couple of wins to tide me over.' The four-meeting ban was added to the three-day suspension Spencer was due to commence from today. Spencer's other win was halved when the judge awarded a dead-heat with Manfred Man Ka-leung-trained High Sky (Gerald Mosse) but the Briton was happy. 'I thought I had run third, so it was a nice surprise,' he laughed after a line of seven horses had stretched across the track in the final 50 metres. Trainer Peter Ho also managed a double with Engineering Wonder (Douglas Whyte) adding to his earlier success with Highlight (Way Leung).