Aidan O’Brien on the Verge of History: A New Record on the Horizon
Aidan O’Brien has found himself in the spotlight once again, with many anticipating greatness from the horse racing legend.
With several expertly trained horses set for Group 1 races within the coming months, plus the 18 wins currently under his belt, something is brewing on the tracks.
Best known for his 2017 world record wherein he trained 28 Grade 1 winners within a single calendar year, 2025 may just be the year he exceeds this number.
For avid horse racing fans, this is an exciting (potential) outcome to this year’s Group 1 races, making for the perfect punting environment.
While some may be wagering on whether he will break his own record before the end of the flat season with friends, others have opted for bigger punting pools.
For example, there are a number of great betting apps for UK gamblers that offer fast loading times, user-friendly navigation, generous bonuses, and competitive odds.
As a result, with the freedom to quickly place sports wagers wherever you are in the world, there has been a larger buzz amongst fans within pubs, on the tracks, and on social media.
However, to better understand how O’Brien could potentially break his own record, it helps to explore Group 1 races at their core.
Could O’Brien Break His Own Record?

Simply put, these are some of the most prestigious competitive horse racing events within the UK and Ireland.
These Group 1 races come to a head at the end of October at the QIPCO British Champions Day (for the UK) and the Futurity Trophy at the beginning of November (for Ireland).
To successfully break his own record, O’Brien needs to obtain (at the very least) 11 more Group 1 wins before or by October 18th 2025.
Prior to O’Brien’s 2017 achievement, a US-based trainer, Bobby Frankel, set the world record in 2003 for 25 wins.
Of course, Frankel held this record until 2017, when O’Brien initially secured 26 wins with the Saxon Warriors taking Doncaster’s Racing Post Trophy.
By the end of the year, O’Brien did the impossible by raising this number to 28 Grade 1 winners, setting an unbeatable new world record.
Naturally, looking back at O’Brien’s progress in 2017 compared to his current track record, there seems to be a slight disparity in numbers.
Upon setting his first world record, the trainer had achieved 23 Group One wins by October, short by just two wins to break Frankel’s record.
Come the end of the season, however, O’Brien managed to rake in 5 additional Grade 1 wins.
What Is Needed
When comparing the trainer’s current 18 wins to his 2017 reign, O’Brien would need to achieve an additional 11 wins within the next calendar month to break this record.
Based on the five wins he brought home in October 2017, securing 11+ wins before the end of the flat season this year is not an impossible goal.
In fact, it could be argued that this close (yet seemingly unachievable) call might just be the push the trainer needs to secure his new world record.
Some of O’Brien’s most notable wins for 2025 so far include the St Leger Stakes winner, Scandinavia, who made modern history on the tracks with the trainer’s 16th win.
A few hours later, Delacroix secured the title at the Irish Champion Stakes, claiming O’Brien’s 17th win in less than 24 hours.
Precise stood out as another impressive win (number 11), by surpassing British raider Venetian Sun at the Moyglare Stud Stakes.
With these rapid-fire wins, there is a high possibility that O’Brien is well on his way to breaking his 28 Group record.
Despite there being no more Irish opportunities, the UK still has a large number of events for O’Brien to secure this victory.
The Opportunities

Key Group 1 contests still to be run before the October 18th cutoff include the Cheveley Park Stakes and the Middle Park Stakes (both at Newmarket on September 27th), the Sun Chariot Stakes (Newmarket, October 4th), the Fillies’ Mile and Dewhurst Stakes (Newmarket, October 10-11), and the five prestigious races on British Champions Day at Ascot (October 18th).
Champions Day opportunities include the Champions Stakes, Queen Elizabeth II Stakes, Champions Sprint, Fillies & Mares Stakes, and Long Distance Cup.
Each of these races regularly attracts elite horses from top stables, but O’Brien has a realistic chance in several, given his exceptional team of older horses and juveniles.
The Futurity Trophy (Doncaster, October 25th) occurs after his record window closes, but may still bolster his reputation.
Key Horses and Tactical Strengths
O’Brien’s two-year-olds consistently excel in the Dewhurst Stakes and Middle Park Stakes, while his fillies are specialist contenders for the Cheveley Park and Fillies’ Mile.
His older horses, such as recent Classic winners and proven Group performers, are potent threats in the Champion Stakes and Queen Elizabeth II Stakes on Champions Day.
Ballydoyle maintains a deep bench, with unraced talent and lightly-raced prospects ready to surface as surprise contenders, furthering his prospects.
He’s supported by market confidence reflecting both the quality of his intended entries and tactical race placement across Europe’s top autumn races.
If injury and luck hold, O’Brien could plausibly add victories in at least half of the remaining 11 Group 1s, thanks to his expertise in targeting suitable horses to the right race.
With so many Group 1 opportunities left, and a stable brimming with form and promise, it is entirely conceivable for Aidan O’Brien to eclipse his own record, capping another year of dominance with a historic tally of top-tier wins.