The full-brother to Capri had finished last in the Irish St Leger on his previous start behind stablemate Flag Of Honour, but was much more at home at this level and over two miles.
Ryan Moore’s mount raced at the rear of the field as his Aidan O’Brien-trained stablemate Zabriskie set a strong pace.
Powering down the centre of the course, the 6-1 chance got the upper hand in the closing stages to beat the 5-2 favourite Twilight Payment by two and three-quarter lengths. Falcon Eight was just a neck way in third.
It was a quick hat-trick for O’Brien and Moore following the victories of Magna Grecia and Hermosa in the opening two races.
“He’s a lovely, straightforward, uncomplicated horse. He’s a brother to Capri and he stays very well,” said O’Brien.
“We weren’t sure what was going to happen, but when Seamus (Heffernan on Zabirskie) jumped to make the running and then Kevin (Manning, on Twilight Payment) joined him, there was always going to be lots of pace and it was a proper-run two-mile race.
“He’s a horse that stays very well. He stays forever and will get much further than two miles.
“He’s Kew Gardens’ work companion and that will determine a lot of his time.
“Ana (daughter) rides him every day and I don’t have much to do with him. Ana is more or less training him.”
Cypress Creek was slashed to 20-1 from 66-1 with Paddy Power for the Qipco British Champions Long Distance Cup at Ascot.