Zac Purton continued his winning ways with a treble on Sunday as Hugh Bowman, Danny Shum Chap-shing and Douglas Whyte fired in doubles at Happy Valley’s only day meeting of the season.

Purton extended his lead in the jockeys’ championship to 17 wins over nearest rival Luke Ferraris when he booted home Ragnarr, Hakka Radiance and Harmony N Blessed at the city circuit.

The eight-time champion Hong Kong rider produced his best ride in the opener, the Class Five Dongguan Handicap (1,200m), when he slotted the David Hall-trained Ragnarr in midfield on the fence from gate 10.

Purton took Ragnarr off the inside early in the straight and the six-year-old ran on powerfully to charge down the $3 favourite, Speedy Smartie, by a neck.

“Pre-race we knew we were in trouble with the barrier, but Zac just got into a great spot and showed what a great jockey he is,” Hall said after Purton helped Ragnarr notch his second win from 27 starts.

“Ragnarr has been in Class Five for a while and he’s been a bit unlucky not to win a few previously, so it’s great that things are going his way at the moment.”

Hakka Radiance was Purton’s biggest winner on the day, with Shum’s import continuing his rich vein of form with a third consecutive victory in the Class Four Shenzhen Handicap (1,800m).

After scoring back-to-back triumphs in Class Five races at the Valley, Hakka Radiance handled the rise in class with aplomb, running on from just behind the leaders to bolt in by two and a quarter lengths.

The five-year-old, who recorded one win from five pre-import starts in Britain when known as Tempered Soul, has finally struck top form after starting his Hong Kong career without a win from his first 24 starts.

He clinched a brace for Shum, who teamed up with Bowman earlier on the card to claim the Class Four Huizhou Handicap (1,650m) with Fantastic Fun.

Settled just behind midfield from gate 11, Fantastic Fun backed up his last-start Valley success when he stormed home to nail pacesetter Samarkand by a short head.

“He was given a free kick last start with an inside draw and a slow pace and he won well,” Bowman said.

“Today he had an awkward barrier and I was able to fluke a really good spot with a genuine tempo and he’s got improvement, too. He’s a big, strong horse with the talent to carry a big weight if he has to.”

Bowman and Whyte were positive about the future of Argento Ocean, who broke through for his first win at start five in the Class Four Hong Kong Country Club Challenge Cup (1,200m).

“He’s shown us a nice bit of promise. He’s been plagued by awkward draws and he still lacks maturity but he’s got an engine and he’s been developed nicely,” Bowman said after Argento Ocean accounted for Lucky McQueen by a length.

“He made his own luck today and I think there’s still improvement to come with him mentally.”

Whyte also struck with Dan Attack in the first section of the Class Four Foshan Handicap (1,200m).

“He’s just a healthy horse and when a horse is in a purple patch like that, they’ll give their best and that’s exactly what he’s doing,” Whyte said of Dan Attack, who has notched two victories at the Valley from his four starts since a stable transfer.