Reigning champion jockey Zac Purton was the king of the shortcuts on Wednesday night at Happy Valley as he used the shortest way home to grab another four-timer and secure the Happy Valley Million Challenge for Caspar Fownes in the process.

With premiership leader Joao Moreira having a rare winless night, Purton dominated as he slotted home the most impressive winner on the card, Speedy Longwah for Danny Shum Chap-shing in the third, then added Twin Delight and Renaissance Art for Fownes and All The Best for Richard Gibson.

Twin Delight, All The Best and Renaissance Art hardly left the rail during their races while Speedy Longwah only came off it to get around the leader, who was no longer much use to him at the 500m.

"The track was very firm tonight, it was hard to make up ground but the fence was clearly the best part of it," said Purton, who is in rare form.

"It was very satisfying to win the Million Challenge with Twin Delight and the second time I've done that as I rode Elfhelm who won the Challenge my first season here. Caspar targeted Twin Delight for the series this season and it's always nice when a plan comes off."

Twin Delight went into the final meeting of the six month-long Challenge in joint second but banked the HK$650,000 first prize when he never really looked like losing his race to go clear and the nearest to him, All Great Friends and Choice Treasure were unable to gain maximum points in their events.

Fownes had won the Challenge previously with Ocean Wide and Socrates and the biggest obstacle to him winning with Twin Delight was an outside draw last night.

"I said to Zac the outside draw probably isn't the worst thing for this horse because he can come across and see what everyone inside him is doing," Fownes said.

"But I did want him to lead if possible - he gets out there and rolls along and runs you a good sectional when he can get the front."

But for upside, Fownes was looking more towards Renaissance Art, whose final race win gave him two from four starts here.

"I think he's quite progressive and 12 months from now, who knows where he'll be," Fownes said.

"Up to 1,800m tonight, he finished off strongly and I want to keep stretching him out further. I'm looking at a race like the Queen Mother Memorial Cup for him if he can get the rating for it but I'll probably run him in a 2,200m before that and build into the 2,400m."

Douglas Whyte also weighed in with a double, taking over from Dicky Lui Cheuk-yin as Derek Cruz's "stable" jockey and with happy results on Harbour Punk and Lyric Ace.

Whyte was straight to the front and dictating on Lyric Ace, who graduated successfully from Class Five to Class Four and has won three of his last four starts, and many expected Harbour Punk to be in front too but he swept home from midfield.

"That wasn't a plan, it just happened that way because he was quite new and having a look around at everything early on and didn't show the pace to lead them.

"But I was happy where I was - he was relaxed and travelling well to the turn and showed a real turn of foot when he came out," Whyte said. "He felt tonight like a nice progressive horse for around the Valley and maybe he hasn't been seen at his best out tearing along in the lead."

It was also a night of comebacks, with Jacky Tong Chi-kit winning on Perfect Triumph to break a losing trot of 140 rides and Andreas Suborics had racked up 84 losing rides before he followed Tong, leading throughout on David Ferraris-trained Smart Declaration.