James Herbertson repaid Greg Sugars' faith when he steered the royally-bred colt Enchauffour to victory in the Breeders Crown two-year-old trotting colts and geldings' final at Melton on Saturday night.

Sent out a $1.95 favorite, Enchauffour held out an early challenge for the lead from his main danger Commodus ($2.15) and reeled off a 56-second last 800 metres to outclass his rivals in the home straight.

He scored by eight metres from Rey Bailando in a mile rate of 1:58.7.

Trained by Jess Tubbs and normally driven by Sugars, Enchauffour has been partnered by Herbertson in both the heat and final.

"I don't know if Greg was 100 per cent coming back (from New Zealand) in time for the final, but he said that I could drive him and I was more than happy to accept that," Herbertson said.

"Greg thinks the world of this horse. He didn't mean to put much pressure on before the race, but the way he was acting with the horse I thought I had better get this right.

"He has got the tools of a well-raced horse, let alone a horse that has only had five or six starts. He's got a massive future."

Bred and owned by Pat Driscoll (Yabby Dam Farms), Enchauffour has now won three of his six starts.

The father and son team of Graeme and Matthew Whittle combined to cause an upset in the Breeders Crown two-year-old trotting fillies' final.

Unplaced at her four starts since winning the Nutrien final at her debut, Prohibited Grace settled behind the leader and $1.28 favorite Gatesys Gem before Matthew Whittle pulled out around the home turn.

Once in the straight, Prohibited Grace powered past Gatesys Gem to score by seven metres in a mile rate of 1:58.4.

"She got out really well, she has good manners and getting a trail I knew she was going to be in a good spot," Whittle said.

"To win a prestigious race, it's a feather to Dad's cap - it's all about family and brings us all together."

The Nathan Jack-trained filly Violet Stanford capped off a busy and successful season when she led from start to finish in the Breeders Crown final for three-year-old trotting fillies.

Sent out a $1.25 favorite, Violet Stanford was untroubled to defeat Jilliby Ballerini and Centurion Dream.

"She means a lot to me this one and she's been a good horse from day dot," Jack said.

"She had an injury and was out for six months, and came back and was on a tough mark. She had to chase the good filly (Keayang Zahara) around and got a couple of things wrong, and had harder runs than anticipated."

Jack indicated his filly will head for a lengthy stint in the paddock.

"You won't see her again until the Sires next year. She'll have a really good spell now," he said.

Earlier in the night, the much-travelled Blake Fitzpatrick-trained Valtino proved too strong for his rivals in the Breeders Crown final for three-year-old trotting colts and geldings.

With Sugars in the sulky, Valtino ($1.65 fav) sustained a long run from the 1200-metre mark to join his main danger Mister Blindside ($3.50) and the pair streeted the opposition in the home straight.

On the line Valtino scored by a metre from Mister Blindside, with a 56-metre margin to the third horse Thunda Struck.