Winning trainer Aidan O'Brien has expressed his delight after winning the Epsom Derby for the fourth time.
Ruler of the World won the famous race on Saturday, beating favourite Dawn Approach who finished last in the race.
The horse ridden by Ryan Moore was 7-1 to win the event and finished ahead of Libertarian and Galileo Rock who were 14-1 and 25-1 respectively.
"He was unbeaten coming here and is a great horse," O'Brien told the BBC. "We are so lucky to be in the position that we are in, to get such horses and then to work with such a team of people."
The 43-year-old trainer previously won the world famous race in 2001, 2002 and last year.
Galileo won it for him in 2001 while High Chaparral done it 12 months later. It was Camelot that was victorious in 2012.
Dawn Approach was the pre-race favourite and took the lead up the hill before fading badly and dropping to the back of the dozen horses racing.
It was the first time Dawn Approach was running over the mile-and-a-half distance and he struggled with the lack of pace early on.
Jockey Kevin Manning did bring him to the front; however, he struggled for stamina and was beaten a long way from home and trainer Jim Bolger admitted it was unlikely he would run the same length again.
"He'd been running over a mile, where they'd been jumping out and going a good pace and Kevin could just let him bowl," Bolger said. "I doubt he'll be running over a mile and a half again."
Bolger did have a previous winner in the Derby after he trained New Approach to victory in 2008, ridden by Manning on that occasion.
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