Irish trainers are responsible for four entries in both the 2000 Guineas and 1000 Guineas at Newmarket next weekend.
Aidan O'Brien has left four colts in Saturday's 2000 Guineas - Arizona, Wichita, Royal Dornoch and New World Tapestry.
The Ballydoyle trainer had three fillies in Sunday's 1000 Guineas - Love, Peaceful and So Wonderful - while Jessica Harrington plans to run Millisle.
The unbeaten Pinatubo heads 15 entries for the 2000 Guineas. The Charlie Appleby-trained colt enjoyed a perfect juvenile campaign, winning all six of his starts, including Group 1 victories in the National Stakes at the Curragh and Dewhurst Stakes at Newmarket.
He ended the season with an official rating of 128 – the highest since Celtic Swing achieved a figure of 130 in 1994. To put his mark into further context, Frankel was rated 126 at the end of his two-year-old season.
The Shamardal colt is set to be joined by stablemate Al Suhail, who was second in the Autumn Stakes at Newmarket, finishing half a length behind Military March, who is in line to represent Saeed bin Suroor.
The Andrew Balding-trained Kameko picked up Group 1 honours in the Vertem Futurity Trophy at Newcastle, while Ralph Beckett’s well-regarded Kinross is another leading contender for the home team.
Arizona looks the best of O'Brien's team. He finished third to Pintubo in the National Stakes but was closer to the red-hot favourite when runner-up in the Dewhurst.
Others to note include Roger Teal’s unbeaten Kenzai Warrior, the Richard Hannon-trained Mums Tipple, who was a runaway winner of a sales race at the Ebor meeting, Brian Meehan’s Cepheus, successful on his only start at Newmarket in August, and Hughie Morrison’s Kempton winner Starcat.
Quadrilateral is the star name among the 17 contenders for the 1000 Guineas on Sunday.
Roger Charlton’s filly did little wrong on her debut before really impressing next time out and then coming home strongly to take the Fillies’ Mile over the Classic course and distance.
Jessica Harrington enjoyed a superb season with her two-year-olds and is set to run Cheveley Park Stakes heroine Millisle, with Mark Johnston set to reoppose with second home Raffle Prize, who will be ridden by Frankie Dettori.
2000 Guineas acceptors: Al Suhail, Arizona, Cepheus, Juan Elcano, Kameko, Kenzai Warrior, Kinross, Military March, Mums Tipple, New World Tapestry, Persuasion, Pinatubo, Royal Dornoch, Starcat, Wichita.
1000 Guineas acceptors: Boomer, Cloak Of Spirits, Final Song, Graceful Magic, Les Hogues, Love, Millisle, Peaceful, Quadrilateral, Raffle Prize, Romsey, Rose Of Kildare, Shimmering, So Wonderful, Summer Romance, Under The Stars, Yes Always.