Aidan O'Brien has an enviable record in the Derrinstown Stud Derby Trial at Leopardstown and appears to be going all out to win this year's event as he is responsible for nine of the 13 entries.
Among that huge team is Idaho, a fine second in the Ballysax Stakes when last seen and already mooted for the race by O'Brien.
US Army Ranger holds an entry but is due to run at Chester earlier in the week.
Beacon Rock, Black Sea, Bravery, Claudio Monteverdi, Deauville, Lieutenant General and Shogun are the other Ballydoyle possibles.
There is one entry from Britain with Richard Hannon's Feilden Stakes winner Ventura Storm in the mix.
Jim Bolger has entered Moonlight Magic and Saafarr, with Dermot Weld's Tirmizi the other possible.
