Castle Lady maintained her 100 per cent record to give Godolphin a 300th top-level success with a convincing victory in the Emirates Poule d’Essai des Pouliches at ParisLongchamp.
The dual winner asserted in the closing stages to give trainer Alex Pantall and jockey Mickael Barzalona a first triumph in the French 1000 Guineas.
Unraced as a juvenile, Castle Lady only made her racecourse debut in March, when successful on Chantilly’s all-weather track.
She improved to take the Group Three Prix de la Grotte over this course and distance and progressed again to lift the Classic for Godolphin.
Commes was second for Jean-Claude Rouget, with Kevin Ryan’s North Yorkshire challenger East running a big race in third place.
Godolphin’s Lisa-Jane Graffard told godolphin.com: “Castle Lady did amazingly well to win – she has done nothing but progress all year and there is some margin for further improvement.
“She is a very straightforward filly and we will sit down and discuss all options for her.
“However, it is probable that a mile will be her limit and therefore the Coronation Stakes at Royal Ascot could be her next race.
“The trainer was unfazed about running Castle Lady on today’s heavy going, but her pedigree and action suggest she will appreciate better ground.”
Barzalona told Sky Sports Racing: “It’s always hard. She had to pass one more step, but she’s got a great mentality, she’s got a beautiful action and a big heart, that made the difference.
“My filly settled well and picked up the last two and a half furlongs.
“When she picked up I thought I was going to win the race by five or six lengths, but in front she was a little bit green so that meant there is a lot more to come.”
Castle Lady was cut to 9-2 from 6-1 for the French Oaks (Prix de Diane) with Paddy Power.