Impressive Royal Ascot winner Time Test has been added to the list of potential runners in the Qipco Irish Champion Stakes at Leopardstown on September 12.
Roger Charlton's runaway Tercentenary Stakes scorer could be joined in the line-up by the Olly Stevens-trained Lightning Spear, another second-stage entrant for the Group One over a mile and a quarter.
The Irish Champion Stakes already featured Golden Horn, Jack Hobbs, Gleneagles, Cirrus Des Aigles, Criterion and Free Eagle.
Legatissimo and the resurgent Amazing Maria spearhead 30 possible contenders in the Coolmore Fastnet Rock Matron Stakes on the same card.
The Palmerstown House Estate Irish St Leger at the Curragh a day later has been beefed up by the addition at the second stage of Clever Cookie, Romsdal, Astronereus and Future Empire.
Panama Hat, trained by Andy Oliver, is also now in the shake-up, with last year's winner Brown Panther, Forgotten Rules, Kingfisher and Snow Sky having stood their ground from the initial entries.
Coventry Stakes hero Buratino, trained by Mark Johnston, has been given an entry in the Goffs Vincent O'Brien National Stakes, in which he could be joined by stablemate Sixth Sense.
Aidan O'Brien and Jim Bolger have added Painted Cliffs and Sanus Per Aquam respectively.
The Johnston-trained Fireglow, Brian Meehan's Blue Bayou and La Rioja from Henry Candy's yard now feature in the list for the Moyglare Stud Stakes, with Tanaza and Illuminate still involved.