The Italian was seen at his very best on the six-year-old, who had been off the track for well over a year.
Having entered the home straight almost last in the 16-runner affair, Dettori timed it to perfection, winning by a nose.
“He was too far back in the race, but we had Frankie on who gave him a good ride,” said trainer Saeed bin Suroor.
“Luckily, he got a clear run all the way and he got there. This time he is in a better race – it’s a Group Two, so it’s a big step up for him.
“We’ll give him a chance at this level and see how he gets on, he’s already had a run so he’s fit.
“I don’t think so much he needs a big field, usually at the Carnival they are good races, strongly run, and that suits him.”
Dettori’s mount is likely to have most to fear from Charlie Appleby’s duo of Art Du Val and D’bai. Appleby also runs Velorum.
Appleby said: “D’Bai ran a very good race in the Al Fahidi Fort and the return to 1600 metres (a mile) is not a concern as he won over the trip as a young horse. We think the trip will suit him at this stage of his career.
“The 1800m (nine furlongs) looked slightly too far for Art Du Val in the Singspiel, so the drop back 200m should be in his favour.
“Velorum needed the comeback run in the Al Fahidi Fort and has improved from it. We think he can be competitive at this level.”
The Group Two Balanchine sees Appleby’s Althiqa and Summer Romance take on Bin Suroor’s Dubai Love and Last Look, with the Roger Varian-trained Stylistique also in the mix.
A’Ali, Caspian Prince, Equilateral, Lazuli, Waady and Nigel Tinkler’s Acklam Express face off in a fascinating Meydan Sprint.
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