Ladies' day brought the fizz back to Newmarket's July festival after a muted opening on Wednesday. Frankie Dettori could not have chosen a better occasion to showcase his talents, the concluding leg of a treble drawing loud cheers from female fans who were rewarded with a flying dismount.

The action was no less effervescent on the track, courtesy of Arcano's convincing victory in the TNT July Stakes. Arcano carried the colours of the late Robert Sangster, whose CV of racing's top prizes included two Derbys and three Arcs. However, the absence of a July Stakes triumph has now been put right even though his sons operate on a fraction of the scale that once saw the former pools magnate keep 400 horses in training.

There is every prospect that Arcano will embellish these laurels in due course. Martin Dwyer was content to settle him towards the rear before asking the Oasis Dream colt to cut down the front-running Orpen Grey. It was a searching question even if Dwyer would later maintain: “I always thought I'd win.”

Although Orpen Grey pushed the winner hard, Arcano possessed too much class. “He is a proper horse,” Brian Meehan, the winning trainer, said. “This was only his second run, so he might improve again.”

Arcano is the second significant juvenile winner from Meehan's stable after Radiohead's impressive victory at Royal Ascot. Yet while Radiohead looks a sprinter, Arcano has the pedigree to compete at a mile. Indeed, Meehan is considering stepping him up to seven furlongs next time.

Arcano's future looks bright - as does that of another juvenile, Awzaan, who scattered his opponents to win a conditions race by five lengths. In contrast, the future for Doctor Fremantle looked murky after his lifeless run at Royal Ascot. But the four-year-old put that uncharacteristic lapse behind him when he swept through to land the Princess Of Wales's Blue Square Stakes from Schiaparelli.

The runner-up was subsequently demoted one place after crossing Alwaary close home. Ted Durcan, who rode Schiaparelli, was banned for four days, while Dwyer, deemed guilty of a similar offence aboard Enroller, was stood down for three days and his mount relegated from fourth to sixth. It was welcome to see the stewards demote horses whose riders have palpably interfered with others, rather than just ban the errant jockeys.

Doctor Fremantle looked a picture in the paddock but the Ascot debacle prompted Sir Michael Stoute, his trainer, to change his pre-race routine. By the time Ryan Moore mounted him in the paddock, most of the field was halfway to post - which Doctor Fremantle reached under heavy restraint. Stoute's approach paid dividends: an amenability to early restraint allowed Doctor Fremantle to finish his race strongly.

“We have always been very keen on this horse and we managed to get him to the start nice and relaxed,” Stoute said. However, the trainer is not inclined to run Doctor Fremantle in the King George, for which he has both Tartan Bearer and Conduit.

Dettori opened the day with a measured ride aboard Kite Wood, who entered the St Leger equation by his authoritative victory over 13 furlongs. Kite Wood hails from the Godolphin stable that later sent out Spring Of Fame for Dettori to double up.

However, the Italian was at his best when galvanising Canadian Danehill in the concluding handicap sprint. Having made the running, Dettori coaxed every last drop from the seven-year-old to shade Tabaret in a photo. “That felt great,” he said. “Besides, it's ladies' day. Everybody's happy.”

Not quite everybody. James Main, Nicky Henderson's vet, yesterday resigned his position as advisor to the National Trainers' Federation in the wake of Henderson being sanctioned for the failed test taken from Moonlit Path. In consequence, Main can no longer continue in his role as veterinary advisor on any committee of the British Horseracing Authority.