Mikel Delzangles feels French challenger What A Name is an "improved" horse as the French handler seeks a second Newmarket Classic in Sunday's Qipco 1000 Guineas.
A daughter of Mr Greeley, What A Name won two of her four starts as a juvenile and ran top colt Olympic Glory to within two lengths in the Prix Jean-Luc Lagardere at Longchamp on Arc day.
She reappeared at Maisons-Laffitte in the Prix Imprudence, easing to what was ultimately a cosy success. Delzangles, who won the 2000 Guineas in 2010 with Makfi, said: "I am very pleased with her and she has improved since winning the Prix Imprudence.
"That was the perfect comeback for her as she did not have a hard race and was only 80 per cent fit.
"I would prefer fast ground for her on Sunday and I do not think that the step up to a mile will be any problem. She is a very easy horse to ride as she never pulls."
Aidan O'Brien's Moth has been supplemented for this weekend's race. Beaten in both starts as a two-year-old, the daughter of Galileo appeared much improved when running out a most impressive winner of a Curragh maiden on her three-year-old debut at the Curragh in early April.
O'Brien revealed afterwards the first fillies' Classic of the season would be considered and she has now been added to the field at a cost of £30,000.
The master of Ballydoyle also has Magical Dream and Snow Queen in the mix.
Sir Henry Cecil's hugely impressive Nell Gwyn scorer Hot Snap is the ante-post favourite and features among 18 confirmations, as does Charlie Hills' Just The Judge.
Richard Hannon could saddle Fred Darling winner Maureen and Nell Gwyn runner-up Sky Lantern, but one significant absentee is William Haggas' Rosdhu Queen.
Unbeaten as a juvenile but only fourth when seemingly failing to stay seven furlongs in the Fred Darling, the three-year-old is set to revert to sprint distances.
Haggas said: "We think she'll be better over shorter and we've decided to give up on the Guineas.
"She worked at the weekend and is in great form. I think that race (Fred Darling) has done a lot of good, but she needs to be better than that at a mile and I can't see it. She has a lot of speed, she is good at going fast, so let's use that as a major weapon."
Asked where Rosdhu Queen could run next, Haggas said: "I haven't got as far as that yet. I'll get there."
Leading Irish handler Dermot Weld has Big Break and Rasmeyaa in the field, while other contenders include Roz, Ollie Olga and Diaminda.
Meanwhile, Ayr's fixture scheduled for May 7 has been abandoned as the track needs more time to recover after undergoing drainage work in the winter.