O'Brien and Moore Rule at Epsom

The Aidan O'Brien-trained Ruler Of The World won the Investec Derby at Epsom under Ryan Moore.

The Chester Vase winner had no qualms in relation to an ability to stay the trip and having made ground from off the pace with two furlongs to go, the 7/1 chance claimed stablemate, Battle Of Marengo and comfortably had the measure of the staying on pair of Libertarian and Galileo Rock as they reached the line.

A delighted O'Brien said: "We're just so lucky, we get these incredibly-bred horses and even before they are mated the dream is for this to happen.

"The owners understand the game so much, they are given all the information and usually come up with a plan and we try and carry it out.

"All the jockeys had their own plan and all the horses were doing their own thing and that is just the way it ended up.

"This horse was impressive at Chester (winning the Chester Vase) and won like a very good horse.

"It's incredible, we're very privileged to be in the position we are."

Coolmore supremo John Magnier remarked: "Joseph had his choice (of what to ride from the Ballydoyle runners) and Aidan thought this horse was the next best.

"That's why the Derby is such an interesting race, as it is all unfolding.

"The weather has been so difficult, we haven't really been on the grass much and if you try to find out everything at home you are not going to win the Derby."

Winning rider Ryan Moore added: "I wanted to be a bit closer, but I just didn't get away very well and it was a very messy race.

"I had no option but to go on when I did, I knew he'd stay the trip very well but I got there a bit soon and he was very green.

"He's improved a lot from Chester and he'll get further. He's got a really likeable attitude.

"I knew the others were coming because I'd gone too early, but he really toughed it out and showed a very good attitude."

He added: "I'm very lucky to be in this position and on these horses. This is the most important race for me."

Karl Burke, assistant trainer to his wife, Elaine, said of Libertarian: "He's a big unit but he's very athletic and I've never seen him lose his balance.

"Once he started making ground I thought he might be fourth or fifth, but then he really got going inside the last furlong and with 50 yards to go I thought he might get second, although he was never going to win.

"Stamina was never going to be an issue for him and why wouldn't we take on the winner again in the Irish Derby, the Curragh would be much more up his street but he will have to be supplemented."

David Wachman, trainer of Galileo Rock, said: "He ran well, we always suspected he'd run a big race so I'm happy with that and he should step forward.

"Wayne (Lordan) said he travelled well but was green when they straightened up and rolled around on the camber so he should improve.

"He's like his three-parts brother (Saddler's Rock) - he stays very well and is a grand horse, I wish I had a few more like him.

"He's in everything and we won't talk about anything until we see how he is."

QIPCO 2000 Guineas winner, Dawn Approach refused to settle in the early stages off a slow gallop, and though Kevin Manning tried not to disappoint the horse by letting him have his head before they came to Tattenham Corner - he was a spent force with three furlongs to travel and cut a forlorn figure as he beat only Ocean Approach home.

The winner could well head to the Arc de Triomphe at Longchamp later in the year and Sky Bet quoted him as 6/1 for that race.

Sky Bet's Richard Horner said: "Dawn Approach proved too headstrong to run his race and give himself a chance of staying the trip and bookmakers will be pleased with that. A Ryan Moore ridden winner though never goes unbacked and with Libertarian who was a very popular each way selection on the day staying on for second and a Pricewise big priced runner in third it certainly wasn't a skinner by any means."