Joseph O'Brien is looking forward to gaining more experience of the undulating Epsom circuit when he partners Thomasgainsborough in the Derby Trial at Epsom today.
The 18-year-old rode in both Classics last summer, finishing fourth on Memphis Tennessee, trained at Ballydoyle by his father Aidan, in the Derby itself.
Thomasgainsborough, one of his father's many entries in the premier Classic this year, lost his maiden tag at Leopardstown in October, and O'Brien Jnr rode him in action at Dundalk on his seasonal debut two weeks ago when he was a staying-on third.
"He ran a nice race at Dundalk for his first run of the year," the rider said.
"It's a hot little race and it looks open enough, so hopefully he can run well.
"I had a couple of rides at Epsom last year, so I've had some experience round the track."
Richard Hannon's Mister Music makes a quick reappearance after finishing second to the impressive Stipulate in the Feilden Stakes at Newmarket last week, while Roger Varian relies on Cameron Highland, impressive winner of a Redcar maiden earlier this month.
Elsewhere, Edward Gillespie is to stand down after 32 years as managing director at Cheltenham racecourse.
Gillespie has looked after the day-to-day running of the Gloucestershire venue since the age of 27.
He will continue in his position until a successor is appointed and then complete a full handover period.
"It has been a privilege to manage Cheltenham for 32 years, and striving for the continued success of this special place has been at the centre of everything I have done," said Gillespie.