Aidan O'Brien has confirmed Oratorio, Gypsy King, Grand Central and Almighty as his four runners in the Vodafone Derby at Epsom on Saturday.
The Ballydoyle handler has selected the quartet from his seven entries which also included Scorpion, Falstaff and Indigo Cat.
"Oratorio, Gypsy King, Grand Central and Almighty will be our Derby horses," said O'Brien.
However, it still remains unclear which horse stable jokey Kieren Fallon will take the mount on, with his choice expected to be between Dee Stakes winner Gypsy King and Irish 2000 Guineas runner-up Oratorio.
Grand Central will be having his third start of the campaign having last been seen finishing a slightly unlucky third in the Derrinstown Stud Derby Trial, while Almighty booked his Derby ticket by filling second spot in the Chester Vase.
After supplementing Virginia Waters at a cost of £20,000 (€29,000) to Friday's Vodafone Oaks, O'Brien confirmed the UltimatePoker.com 1000 Guineas winner will take her place in the fillies' Classic along with stablemates Mona Lisa and Silk And Scarlet.
Yeats, who was favourite for last year's Derby before being ruled out just days before with a muscle problem, will also represent the County Tipperary-based trainer in the Vodafone Coronation Cup on the Oaks card.
The four-year-old made a pleasing return to action when runner-up to Cairdeas in the Mooresbridge Stakes earlier this month.