Ramonti powered home strongly to give Frankie Dettori his fourth victory in the Queen Elizabeth II Stakes at Ascot.
Ramonti gave Frankie Dettori another memorable day at Ascot
The Godolphin challenger kicked for the line with two furlongs to go to get past pacesetter Duke of Marmalade.
But the 5-1 shot maintained his challenge over the final furlong with the favourite Excellent Art closing.
The win added to Ramonti's successes earlier this season in the Queen Anne Stakes at the Royal meeting and the Sussex Stakes at Goodwood.
Duke Of Marmalade, the mount of Mick Kinane, set out at a tough pace but Ramonti was just behind him and Dettori made his intentions clear as he asked his mount for an effort.
Ramonti responded to quickly build up a clear lead and defeat Excellent Art by half a length with Duke Of Marmalade the same distance away in third.
A delighted Dettori said: "Now he is undoubtedly the best miler in Europe. He has won three of the biggest races and is a true champion.
"It was a long way from the two-furlong marker to the line, but I had a great champion underneath me and I could hear the whips cracking.
"He's an ultimate professional and a great fighter."
Winning trainer Saeed Bin Suroor was quick to heap praise on Ramonti.
"Frankie gave him a brilliant ride," he said. "The horse was in great form before - it was a very tough race but the horse had the class to win.
"He has won three Group One races now this season. Horses that come from Italy can find it tough but he's proved it now and he's still fighting."
Queen Elizabeth II Stakes
1. Ramonti (L Dettori) 5-1
2. Excellent Art (J P Spencer) 15-8 Fav
3. Duke Of Marmalade (M J Kinane) 13-2