Aidan O'Brien mopped up the concluding King George V Stakes by saddling the first three in the mile-and-a-half handicap for three-year-olds.
South Pacific (22/1), ridden by Seamie Heffernan, led home his brigade after producing a neat turn of foot in the final furlong.
Constantinople was just a neck behind his stablemate in second, with Eminence completing the trio a further length and three-quarters away. Persian Moon was fourth.
O'Brien, saddling his fourth winner of the week, expects more improvement from all three horses.
He said: "The winner is a lovely horse, a progressing horse. He's happy at a mile and a half and will get better. He might stay further.
"I was delighted with the second horse, he's only a baby. For him to do that under top-weight, and the third horse the same. He's a big horse.
"They would all progress, I'd imagine. They ran off nice marks. The second horse won a Group race last time.
"We might stay at a handicap next with them and progress after that. We'll see."
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