Dylan Browne McMonagle announced himself on the British Classic stage in emphatic fashion at Epsom on Saturday, guiding Joseph O'Brien's Thundering On to a dominant victory in the Betfred Oaks that was more controlled than the winning margin suggested.

The 23-year-old, already Ireland's reigning champion jockey, settled his filly at the rear of the field from the outset and barely needed to intervene as Thundering On cruised into contention alongside John and Thady Gosden's Legacy Link before pulling clear in a manner that left little doubt about her superiority. The ride was a study in patience — McMonagle reading the race with a composure that belied his age.

Speaking afterwards, McMonagle was candid about the ease with which his mount had handled the challenge, noting that she had been working well heading into the race and that the step up in trip held no fears. "She's got a lot of speed, she's a strong traveller and it didn't surprise me to be honest," he said, adding pointedly that an earlier move would have produced an even wider winning margin. The comment underlines just how much was held in reserve.

For McMonagle, the win carries personal weight beyond the prize money. The Letterkenny native described his Irish championship as a childhood dream fulfilled, while also pointing to a formative stint in Hong Kong over the winter as an experience he intends to build on. The Oaks now adds a first British Classic to a CV that is accumulating rapidly.

His partnership with Joseph O'Brien continues to yield results at the highest level, and Thundering On's performance opens up a rich programme of options. McMonagle was unequivocal on her versatility, suggesting she can operate at the top level across a range of targets for the remainder of the season.

Derby Day Ambitions

The Epsom weekend is not finished for McMonagle. He holds a live Derby ride in James J Braddock, and was measured but optimistic when assessing the colt's prospects. He flagged the ground and the trip as factors likely to suit, while acknowledging the competitive nature of the field. The phrase he reached for — that James J Braddock carries "the same kind of profile" as Thundering On — is significant coming from a jockey with fresh Oaks confidence coursing through him.

His closing sentiment was straightforward: the race cannot be won from the outside, and his intention is to give the colt every chance. Whether Saturday produces a Classic double will be known soon enough, but McMonagle arrives at the start of the Derby as a man whose belief in his own horses is thoroughly earned.