Diamondsandrubies was a most impressive winner of the Arkle Finance Cheshire Oaks at Chester. The daughter of Fastnet Rock closely tracked the pacesetting duo of Sweet Dream and Banzari for most of the race until Ryan Moore went about his business at the top of the home straight. O’Brien’s filly received an accidental crack of the whip on her nose when Moore went for a winning run, but that did not knock her off her stride as she was much too good for Entertainment. Moore said: “I had a nice run round and she travelled very easily. They didn’t go that quick, but when I asked her she quickened like a smart filly and we’re real pleased with her. “For a big filly, she’s gone round there very easily.” Joint-owner Roisin Henry said: “We weren’t looking forward to it as we were worried about the ground, but she’s come good. “We came here more hopeful than confident, so we’re really thrilled. “Ryan kept her very balanced. Even though she got a crack across her face she seemed to come on for it. When asked if she thinks Diamondsandrubies is capable of winning an Oaks, Mrs Henry said: “I do now.” Coolmore’s UK representative Kevin Buckley said: “Ryan said she gave him a really good feel – she missed the break a little, but settled well and when he pressed the button she really responded well. “The Oaks is the likely target and she is right in that picture.” Press Association Aidan O’Brien’s 5-4 favourite was suitably revved up following two runs in April and had little issue taking this Listed affair by six lengths. Diamondsandrubies was subsequently cut to 8-1 from 20-1 by Paddy Power for the Investec Oaks at Epsom, and it is not difficult to see why.