Estimate's daughter enters the equation at Doncaster on Friday

Estimate, whose victory for the Queen in the 2013 Gold Cup even saw her commemorated on one of Her Majesty’s postage stamps, has her second runner as a broodmare at Doncaster on Friday.

Town Moor was the scene of another of Estimate’s major victories in the Doncaster Cup and the link was maintained when her first foal, Calculation, claimed a wide-margin first win back in late June.

Calculation went on to complete a hat-trick for Sir Michael Stoute over a mile and three-quarters, so the suspicion is that his Dubawi full-sister Approximate, in training with Michael Bell and to be ridden by Hayley Turner in the British EBF Maiden Fillies' Stakes at 2.25, should need a longer trip in time.

Estimate paid a third visit to Dubawi, producing a colt who is now a yearling and this year bore a Frankel colt foal.

Kiyoshi was a dual Group winner for Qatar RacingCredit: Alan Crowhurst

Newbury’s opening event at 1.10, the Energy Check EBF Maiden Stakes, features the colours of a number of other well-known owner-breeders and it is the representative of Qatar Racing who is worthy of the first mention.

Iron Heart is the Muhaarar-sired first foal of the same owner’s Kiyoshi, a precocious Dubawi filly who earned her keynote victory early in her career when clinching the Albany at Royal Ascot. Placed in both the Moyglare and Cheveley Park, the 80,000gns Book 2 buy also added the Sceptre Stakes at Doncaster as a three-year-old.

Among his rivals is Bullfinch, the second foal of the late Lady Rothchild’s Pretty Polly heroine Thistle Bird. Her first, Thorn, was not a major achiever despite a Ffos Las win, but her cover by Kodiac in this instance gives optimism that Bullfinch will have speedier wings.

Oksana Astankova, named after Jodie Comer’s idiosyncratic assassin Villanelle in Killing Eve, is a Cable Bay half-sister to her owner-breeder Steven Smith’s Dan’s Dream, whose big day came on this track in last year’s Fred Darling Stakes.

Many eyes in the 6.00 at Newcastle will be on the John Gosden-trained Maria Rosa, who skipped an engagement at Wolverhampton last week.

The War Front filly is a half-sister to no less a talent than Nyquist, whose exploits included a Breeders’ Cup Juvenile win en route to champion two-year-old honours, as well as the 2016 Kentucky Derby. Godolphin bought her for $1,750,000 at Keeneland last September and dipped in again at $2,500,000 for her Tapit yearling colt this time around.

On virtually any other occasion, the breeding of Fooraat would make her the focal point of the Ladbrokes Where The Nation Plays EBF Fillies' Novice Stakes. She represents the combination of Dubawi and Nahrain, who Roger Varian trained to strike twice at the highest level and whose first foal by the same sire is Benbatl, Saeed Bin Suroor’s global flagbearer.

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