AMBIVALENT has a bit to find on the ratings in the DFS Park Hill Stakes at Doncaster, but she should be game for the challenge in the Group Two.

Having just her sixth career start here, Roger Varian’s filly is certainly reasonably unexposed but has demonstrated a touch of class on her latest outings.

Winner of one of her two juvenile runs last term, Ambivalent made a victorious start to her 2012 campaign in a Nottingham handicap back in June.

However, connections clearly feel she is better than that level as they upped the daughter of Authorized to Listed company next time and punters made her favourite.

While she was slightly disappointing in third behind the reopposing Hazel Lavery, it was a pretty steep learning curve and she had clearly taken heed as she scored at Listed level last time.

She pulled clear in the last of 12 furlongs that day and looked as though the extra quarter of a mile here would not be too much of a problem.

Her siblings include a 14-furlong winner and a successful hurdler, so there is evidently plenty of stamina in the pedigree and Ambivalent could be something of a surprise package.

Aidan O’Brien landed the Weatherbys Insurance £300,000 2-Y-O Stakes with Reply last year and can repeat the trick with Parliament Square this time.

The pair have quite similar profiles with both having been tried in Pattern company and saddled with top weight here.

Parliament Square is already a Listed winner this year and was last seen finishing third in the Prix Morny at Deauville, form which is truly out of the top drawer.

He may well have been closer in France if he had started from a better stall but, nevertheless, it was an excellent effort and a repeat of that would make the Acclamation colt hard to top on Town Moor.

Sentaril disappointed last time but she should be given a chance to redeem herself in the Japan Racing Association Sceptre Stakes.

The three-year-old looked a useful prospect when notching wide-margin wins on her first couple of starts before failing to catch Ishvana when upped to Pattern company in the Jersey at Royal Ascot.

Wiliam Haggas’ filly was then sent off favourite next time out at York on the back of that effort, but she cut no ice at all and ran very flat.

The Lighthouse Club Jump Jockeys Derby Handicap is something of a highlight at Epsom and Jimmy McCarthy can come out on top aboard Kings Troop.

The duo finished third in the race last year and Kings Troop thrives at this track, as proved by his recent second on the Downs.