Poetic Flare won the 2,000 Guineas at Newmarket for racing's enduring combination of jockey Kevin Manning and trainer Jim Bolger.
The winner, a son of 2013 victor Dawn Approach, edged out Master Of The Seas by a short head, with Lucky Vega third.
Manning, 54, is the oldest jockey to win a British Classic since a 56-year-old Lester Piggott won the Guineas on Rodrigo De Triano in 1992.
"I thought I would win but not that it would be that close," Manning told ITV.
"He has done nothing wrong, this horse - I really fancied him. He is a tough horse. It is very important winning these races. They are hard to come by."
Bolger, 79, and wife Jackie are the first owner, trainer and breeders of a Classic winner since Morston's Newmarket victory for Arthur Budgett in 1973.
It was the first time since 2013 that a horse trained by Aidan O'Brien did not finish in the first four of the 2,000 Guineas.
He saddles hot favourite Santa Barbara in the 1,000 Guineas on Sunday.
- The Lazarus Heist: A group of hackers cause mayhem in Hollywood for Sony Pictures Entertainment
- Processing grief: The Crowd Science team explores why it is a universal feeling