Blackbeard got the better of Persian Force as Aidan O'Brien landed the Darley Prix Morny at Deauville for the fourth time in his career.

The No Nay Never colt was the Ballydoyle number one following his victory in the Prix Robert Papin at Chantilly last month.

The 270,000 guineas buy was away well in the six-furlong Group One and setting the pace alongside Amy Murphy's Manhattan Jungle in the early stages, as the five runners headed down the Normandy straight in two lines.

As the race developed, Frankie Dettori appeared to be travelling smoothly on Richard Hannon's Persian Force and was soon disputing matters with Blackbeard at the head of affairs.

The pair drew clear of Blackbeard's stablemate The Antarctic inside the final furlong, but it was the mount of Ryan Moore who pulled out extra when it mattered most to pick up the first prize.

The winner returned at an industry price of 6-4 and 13-10 on the PMU.

"We're very happy with him. He always feels like he has a little bit more, but he (Moore) was delighted with him. He’s a proper fast, early, mature two-year-old – he jumps and takes loads of racing," said O’Brien.

"Blackbeard’s obviously very speed orientated, he might get further but he has a lot of speed. He would have the option to come back (to France) for the Group One (Prix Jean-Luc Lagardere on Arc day) or the Middle Park (at Newmarket), so I think all those races are options for him.

"He has bags of speed, and being physically very well made, he’s built to go fast, like his father was."

Richard Hannon's Aristia caused a shock in the Darley Prix Jean Romanet as Melbourne Cup winner Verry Elleegant failed to fire on her French debut.

Second behind Nashwa in the Nassau Stakes at Goodwood last month, the daughter of Starspangledbanner showed plenty of heart in the hands of Sean Levey to prove that effort on the Sussex Downs was no fluke in her trip to the Normandy track.

Always at the head of affairs alongside Paddy Twomey’s Rosscarbery, it was the raiding pair that stayed there all the way to the line, with Hannon’s game filly sticking her head down to hold on for Group One glory by a neck as a 6-1 shot (42-10 on PMU).

Verry Elleegant, sent to Francis-Henri Graffard ahead of a possible Prix de l’Arc de Triomphe bid, was held up at the back of the pack in the early stages by Frankie Dettori, but the Italian was working away on the 11-time Group One winner as the field swung for home and the duo were never a factor at the business end of the race, coming home last of the seven runners.

A delighted Hannon was quick to pay tribute to Levey.

"Sean has given her a lovely ride and it was his idea to make the running," he said.

"Our last five Group One winners, he has ridden them. It is great for him – he is a very good jockey."

On Aristia, he said: "There is the race on Arc day (Prix de l’Opera), one on Champions Day, but today was her day.

"What we do next we will kind of sit and think about over the next week or so."

Sea La Rosa followed up her Goodwood victory in the Lillie Langtry Stakes by taking the Darley Prix de Pomone as the 4-7 favourite (3-5F on PMU).

William Haggas’ filly tracked the Ryan Moore-ridden Glenartney in the early stages of the Group Two contest and there was a brief moment of worry as Moore upped the ante in the home straight.

But Tom Marquand got the stamina-laden four-year-old rolling as the race entered the closing stages and she was able to hold on from Andre Fabre’s fast-finishing Love Child.