The O’Brien family will hold a commanding hand when the Betfred St Leger celebrates its 250th running at Doncaster on Saturday.
Aidan O’Brien and his son Joseph are responsible for seven of the 12 horses remaining in contention for the £700,000 Group One, headed by Derby winner Christmas Day, progressive stayer Enceladus and last-start Listed winner Highwayman.
Run over 2800 metres, the St Leger is the oldest of Britain’s five Classics and brings the curtain down on the country’s Classic season. This year’s milestone edition will be staged at 10.35pm Singapore time, with £396,970 awaiting the winner.
The headline act is Christmas Day, who will attempt to become the first horse since Reference Point in 1987 to complete the Derby–St Leger double.
A son of Camelot, Christmas Day produced his finest performance when defeating Maltese Cross at Epsom before finishing second in the Irish Derby and third behind the same rival in the Great Voltigeur Stakes at York.
That York run came after a break of almost two months and should have brought him forward for Doncaster. He has also shown himself to be effective across a range of ground conditions, an important asset with the early forecast suggesting good-to-soft going.
Victory would continue Aidan O’Brien’s recent domination of the Classic. The Ballydoyle trainer has won the past three editions with Continuous, Jan Brueghel and Scandinavia, and is now chasing a fourth consecutive success.
However, Christmas Day may first have to account for several of his own stablemates.
Pierre Bonnard finished ahead of the Derby winner when chasing home the Arc-bound Maltese Cross in the Great Voltigeur. The son of Camelot was a Group One winner in the Criterium de Saint-Cloud as a juvenile and also stayed on strongly to finish third in the Irish Derby.
Although Pierre Bonnard has finished behind Christmas Day on three occasions this season, his latest performance at York suggested the longer St Leger distance could play to his strengths.
Aidan O’Brien has also left Action, Piazza San Marco and the only filly among the remaining entries, Amelia Earhart, in the race ahead of final declarations.
While Ballydoyle has strength in numbers, Joseph O’Brien appears to have two serious chances of denying his father another St Leger victory.
The rapidly improving Enceladus will arrive at Doncaster chasing a fourth straight win. The Sea The Stars colt opened his season with a maiden victory at Cork before stepping through the grades to win the King George V Stakes at Royal Ascot and the Group Three Gordon Stakes at Glorious Goodwood.
He remains lightly raced, having made just five career appearances, and Joseph O’Brien believes the additional distance at Doncaster will suit him.

“Enceladus has been progressive and goes there on the back of a career best,” O’Brien said.
“It looks like being a good renewal of the race, but Enceladus is an obvious contender and I think the extra couple of furlongs will suit him. I don’t see it being an issue and he’s a good horse.”
Billy Loughnane has secured the ride on Enceladus after Joseph O’Brien’s regular jockey Dylan Browne McMonagle was sidelined through injury. The booking has attracted support in the betting market, with the colt now established as one of the leading challengers to Christmas Day.
Joseph’s second runner, Highwayman, brings a very different profile into the Classic.
The Persian King colt was unplaced through his first four starts but has improved dramatically since being asked to race over longer distances. He broke his maiden by nine lengths over 2300 metres at Killarney before proving his stamina with a decisive victory over the St Leger distance in the Listed Vinnie Roe Stakes at Leopardstown.
That performance earned Saffie Osborne the call-up for what could become a historic ride.
No female jockey has won a British Classic, and victory aboard Highwayman would provide another major landmark in a season that has already included important wins at Ascot and Goodwood and success as captain of the Great Britain and Ireland team in the Shergar Cup.
“My agent texted me to tell me I was riding him and I was very excited,” Osborne said.
“He looks a really nice horse and it’s great to get the opportunity. Joseph is having an incredible season and it’s an honour to get the call-up to ride a horse like this who looks like he has a serious chance.”
Osborne has already gained Classic experience this season aboard Touleen in the 1000 Guineas, before finishing second to Precise in the Coronation Stakes at Royal Ascot.

“Highwayman looks very progressive,” she said.
“He won a Listed race last time and looked to stay the trip well, so hopefully the same distance on Saturday will be no issue for him.”
Joseph O’Brien is no stranger to St Leger success. He rode Leading Light to victory for his father in 2013 before returning as a trainer to win the race with Galileo Chrome in 2020.
Beyond the powerful Irish challenge, Andrew Balding could be represented by Hatteen and Galiyan.
Course winner Hatteen is the more intriguing of that pair after winning Doncaster’s inaugural St Leger Trial before narrowly missing in a handicap at Glorious Goodwood. He faces a substantial rise in class but has already demonstrated his liking for Town Moor.
Karl Burke’s Golden Story, Faye Bramley’s Rebel Rocker and Richard Hannon’s Alderman complete the list of horses remaining in contention.
The balance of power may rest firmly with Ireland, but the biggest question could be which branch of the O’Brien family collects the final Classic of the season.
For Aidan, victory would mean a fourth successive St Leger and another Derby–St Leger hero. For Joseph, it would provide another defining moment in an exceptional British campaign for the talented horseman.
For Osborne, meanwhile, Highwayman offers the opportunity to create a piece of Classic history of her own. By Scott Bailey






























