Joy for Doyle as Diagnostic delivers Diagnostic rewarded favourite-backers with a comprehensive success in the 32Red All-Weather Fillies' And Mares' Championships Conditions Stakes at Lingfield. The William Haggas-trained grey racked up a Chelmsford hat-trick within the space of a few weeks last autumn and although she had been narrowly beaten into third on each of her two starts since the turn of the year, she was a 7-2 market leader on All-Weather Championships Finals Day. James Doyle's mount was never too far off the pace being set by Titan Goddess and quickened up well to beat Carolinae fairly readily by a length. Lucymai was best of the rest in third. Doyle said: "She had a look at the screen on the way down but we eventually got there. "I predicted a strong pace but we needed different tactics. "Once we got out of the stalls, all options were open and she relaxed really well." Assistant trainer Maureen Haggas said: "She just relaxed well. It was a nice, fast pace which suited her and she did nothing wrong. "The trip suited her well but they've done a really good job at home. The guys riding her really relaxed her. She's in a much better place than the back end of last year. "She just wanted to get on with it but she has grown up a bit now and, as you can see, she's a beautiful filly." Chris Richardson, racing manager for Diagnostic's owners-breeders Cheveley Park Stud, said: "That was very pleasing and she's obviously benefited from going a little bit further. "William suggested this should be her target. She had an abscess on her foot and missed a bit of work three weeks ago. "She enjoyed the fast pace and had enough horses around her. I think she'll improve again and James said she is coming into her own now. "The Chartwell Stakes back here might be what we look at next."