High Definition is the big potential eye-catcher in the feature Group Two Dante Stakes on Thursday, with the Ballydoyle Derby hopeful looking to stamp his authority on the division.
This three year old has only been seen twice to date, but was one of the most remembered winners for O'Brien on his debut last season, when landing a maiden event over a mile at The Curragh.
High Definition was then sent into the Group Two Beresford Stakes, a race O'Brien has won 11 of the last 12 years with the likes of Capri, Japan and Saxon Warrior.
The colt was sent off as the favourite for the event and when going for home looked in big trouble being last of the pack, but he put in a superb final few furlongs to get up near the finish
It showed he was a Derby horse in the making getting better the further he went and having been pulled out of his return at Lingfield due to bad bloods, the Dante looks one of his last chances to run before the big one at Epsom.
If going on to perform well on his seasonal debut he will be shorter than 7/1 for the Derby, with that price already larger than the 4/1 he had been at the start of the season.