Constitution Hill faces his toughest assignment since turning to the Flat when he contests the John Porter Stakes this weekend.
Nicky Henderson's stable star could take on up to 10 rivals at Newbury in what will be his first start outside of novice company on the level.
The former champion hurdler is two from two since switching codes, landing convincing successes at both Southwell and Kempton.
Saturday's £95,000 contest is expected to feature a whole host of established Group performers including last year's Dante winner Pride Of Arras.
Ralph Beckett's charge went off a fancied 4/1 for the Epsom Derby when things didn't quite go to plan but returned to form later in the season when landing the Great Voltigeur back at York.
He is a fascinating proposition heading into his four-year-old campaign and the opposition doesn't get any more straightforward for Constitution Hill with Al Aasy also receiving an entry.
The tried and tested nine-year-old is rated in the mid 110s and will be tough to beat, especially back at his beloved Newbury where he is well acquainted with the winner's enclosure, winning four times at the track.
He is one of two in the race for William Haggas at this stage alongside Frankel gelding Tenability.
There is also a chance that Constitution Hill could face an old rival from his hurdling days with Burdett Road a potential runner.
He finished runner-up behind Golden Ace in the 2025 Champion Hurdle in the very same race that Constitution Hill suffered the first of his three falls that prompted a career change.
The final field for Saturday's John Porter Stakes is decided at 10:00 BST on Thursday 16th April with jockey confirmations also expected around the same time where Oisin Murphy is in line to replace Ryan Moore aboard Constitution Hill.
John Porter Stakes entries
Al Aasy William Haggas
Bellum Justum Andrew Balding
Beset Joseph O'Brien
Burdett Road James Owen
Constitution Hill Nicky Henderson
Convergent Karl Burke
Eydon Andrew Balding
Lion's Pride John & Thady Gosden
Phantom Flight George Scott
Pride Of Arras Ralph Beckett
Tenability William Haggas
