Sky Sports Racing ambassador Hollie Doyle will dominate the opening day of York's Ebor Festival on Wednesday, which features the much‑anticipated clash between Ombudsman and Constitution River. The highly adaptable Ombudsman is expected to be a formidable opponent in the £1.5 million Juddmonte International Stakes (3.35), a marquee event that will headline day one at York.

Trained by John and Thady Gosden, the five‑year‑old has already added two Group 1 victories to his résumé since winning this race in spectacular fashion a year ago: the Dubai Turf at Meydan and the Prince of Wales's Stakes at Royal Ascot. Those triumphs have cemented his reputation as a world‑class middle‑distance performer. Across the paddock, Aidan O'Brien’s Constitution River offers a different kind of intrigue. The colt, who captured the French Derby and the Coral‑Eclipse, is still developing and could reach a new level when he meets the older, more experienced Ombudsman.

At two years younger, Constitution River enjoys a seven‑pound weight allowance, and his pedigree—being out of the prolific sire Wootton Bassett—suggests he has not yet hit his peak. He is versatile enough to test the colours of the Godolphin stable, and many expect a tactical battle that could redefine his standing among the elite. Juddmonte’s representative, Item, has demonstrated a fondness for York, having secured Group 2 victories in the Dante and the York Stakes. Although his official rating is only two pounds behind Constitution River, he will need to dig deep to displace the leading pair in this high‑stakes contest.

Further down the card, Maltese Cross will look to cement his credentials for the 250th running of the St Leger. After a strong performance in the Sky Bet Great Voltigeur Stakes (3.00) at York—a traditional trial for the Classic—he hopes to avenge a narrow Derby defeat. His connections, including husband Tom Marquand, are confident he can rebound after a hard‑won Group 1 Grand Prix de Paris win last month.

The colt overcame numerous in‑race difficulties in that victory and should appreciate the firm ground at the Knavesmire before stepping up in distance at Doncaster. Christmas Day, who fell short of replicating his Epsom triumph in the Irish Derby, may emerge as the primary Ballydoyle challenger to Maltese Cross. His stablemate Pierre Bonnard was only a neck behind him, indicating that the stable possesses depth that could surprise on the day.

In the Group 3 Tattersalls Acomb Stakes (2.25) at York, Haffner is the horse to beat despite a less‑than‑ideal showing in the Vintage Stakes at Goodwood. The O'Brien colt, who previously captured a maiden at Newmarket, now finds himself facing the unbeaten Dr Rascal on the Downs.

With a relatively modest target compared to his rivals over seven furlongs, Haffner’s performance will be closely watched. Should Haffner falter, Ed Walker’s Alfred Wallace could seize the opportunity.

The son of the top‑class mare Snow Lantern earned a deserved Listed victory at Ascot and may have the class to improve when stepping up to this higher level. York’s big sprint handicaps are notoriously tough to pick, but I see a strong case for Toca Madera in the opening Hong Kong Jockey Club World Pool Handicap (1.50).

David O'Meara’s gelding narrowly missed a better placing in the Stewards’ Cup at Goodwood and now benefits from an unchanged mark and the return of stable jockey Danny Tudhope. Drawing stall four, a favourable position on the straight track, should suit the well‑supported runner known as The Man. Richard Spencer’s horse, who finished second in the same race last year, lagged behind Toca Madera at Goodwood, suggesting a possible reversal of fortunes.

A more speculative but potentially rewarding option is Lemos de Souza’s Naana’s Sparkle. The gelding finished ahead of both Toca Madera and The Man in that Goodwood sprint, and his middle draw could provide a solid tow into the race, offering attractive odds for those seeking value. I have earmarked Small Fry as my "Hot Shot" after an unlucky run at the Goodwood Festival, and I will not overlook him in the Sky Bet Stayers Handicap (4.10) at York. Joseph O'Brien’s gelding was shuffled back at a crucial stage of the valuable Summer Handicap but still managed a close second over 1 m 6 f.

A four‑pound weight increase could still allow him to pick up a decent place, especially now that he benefits from Ireland’s champion jockey Dylan Browne‑McMonagle. The step up to two miles should suit Joseph’s son of Harzand, who stays well and will now have top‑class riding support. Likewise, Andrew Balding’s Shrimp Shady is emerging as a force in senior handicaps. After a strong second place at the Shergar Cup and a lucrative win at Newbury, he will relish the test on the Knavesmire and should not be discounted.

Overall, day one of the Ebor Festival promises a blend of proven champions, rising stars, and tactical intrigue across a range of distances. Whether it’s the seasoned power of Ombudsman, the youthful promise of Constitution River, or the staying potential of Maltese Cross and his rivals, spectators can expect a day of high‑quality racing that will set the tone for the remainder of the festival.