Darren Weir has started the new racing season in a blaze of glory, training a career-best five winners at one racetrack.

The opening city meeting of the new season at Flemington belonged to Weir who also captured the main race on Saturday's card, the Group Three Aurie's Star Handicap with Sooboog.

The victory of Camdus in the VRC Member Keli Sponner Handicap came on top of wins by Killarney Kid, Royal Rapture and Ulmann.

"Everything has fallen into place today," Weir said.

"Normally something goes wrong but today the horses got here in good order and the ones we thought had chances were given good rides."

Weir said he had may have trained more winners in a day, but five at the one venue was a personal best.

"This is the most famous track, so to do it here is really special," the Melbourne Cup winning trainer said.

Weir said the win of Sooboog, a former Hawkes Racing galloper who joined his team in April, was an important one for the stable.

He said a lot of hard work at both his Warrnambool and Ballarat stable had gone into turning around the fortunes of Sooboog, a high-priced yearling.

Ridden by apprentice Michael Dee, Sooboog ($5.50) scored by 1-3/4 lengths from Dibayani ($9.50) with Tashbeeh ($7) a short-neck away third.

"He did a lot at the beach at the start but then we swapped him back to Ballarat in the last 10 days," Weir said.

"He's done a bit of schooling, a few strong grass gallops and it's switched him on.

"We'll just swap him from stable to stable to keep him interested."

Weir said Sooboog had conditions to suit on Saturday and importantly didn't get his head up during the straight 1200m race.

"He began well and raced properly for once," Weir said.

"He got into a good rhythm and when he can do that he's a really good galloper."

As a high-priced yearling Weir said it was important to get the Group Three victory under Sooboog's belt and he will now try to enhance his stallion prospects with further black-type wins.

Weir said there are no specific plans but added the way Sooboog relaxed a rise in trip to 1400m may not beyond him.