Curtain Call (left) leads home Drill Sergeant at Nottingham in April
Curtain Call, second favourite for the Derby, is in peak condition, according to Newmarket-based trainer Luca Cumani.
The upbeat assessment comes despite the lack of a recognised trial for the Sadler's Wells colt who missed a key race at Lingfield due to fast ground.
Cumani told his website: "In his demeanour he is showing the right signs and is irrepressibly fresh in spite of the amount of work he has had."
Curtain Call is as short as 4-1 for the Epsom classic on 7 June.
Cumani says the decision to pull the unbeaten colt out of the Derby trial means preparations have been less straightforward.
"As a consequence of not being able to run at Lingfield we now have the difficult task of keeping him at his peak rather than building him back up after a run.
"Fortunately he is good at demonstrating his wellbeing and seems to be a horse that can take plenty of work and thrives on it; he looks in peak condition."