Zac Purton awoke from a winter slumber and bounced back into form with a double to extend his jockeys' championship lead - but the man himself was heaping the praise on his two winners.

In-form pair Precision King and Aerovelocity overcame adversity in their respective wins, earning plenty of respect from Purton, who had a spring in his step after the sun started shining following a recent cold snap.

"I'm feeling a lot better now the weather is getting warmer - I'm like a horse that has turned a corner, I really struggle with my weight through winter and it was tough," he said. "I hate the cold." Purton moved to 61 winners for the season and stretched what had been a dwindling lead from five to six with his brace, as Joao Moreira notched a solitary, but significant, win on the Australian's former ride Military Attack in the feature race.

Paul O'Sullivan's Aerovelocity might have won four on the bounce, but as Purton put it, "he has overcome adversity every time", and leapt into Class One with his all-the-way win.

"He has never had a race run to suit him," Purton said after Aerovelocity was pestered up front by hard-charging pair Cheetah Boy and Good Words, and then challenged by Our Folks for much of the straight.

"There always seems to be some fly in the ointment for him, he had to carry a big weight and he had them on his outside keeping them honest. He is as game as they come, and so competitive as soon as they come to him he finds more - he tries as hard as any horse I have ridden in Hong Kong. He is a real gem and Paul's stable is flying."

Aerovelocity's success gave O'Sullivan 15 wins for the term - a significant figure, as it is the performance criteria benchmark for trainers, the popular Kiwi celebrating with a round of hugs from local journalists.

O'Sullivan said that even though Aerovelocity had reached triple figures ratings territory at 1,200m, the son of Pins was bred to be a miler. "We won't step him up to 1,400m until we have got as many wins as we can out of him. We can take him up to a mark, and at least we know we have other options, he isn't a one trick pony by any means," he said.

Benno Yung Tin-pang's Precision King made it three from his last four with another smart front-running effort, but was later found to have bled from both nostrils and will now serve a three-month ban on the sidelines.

"He is just like the other one - he is unbelievably game, not too many win when they bleed like that," Purton said. "The great thing about him is that he makes his own luck - he gets out there and does it the hard way."