Grid Girl made the trip to Rosehill and won, albeit narrowly, in benchmark 94 company on December 7 and notched a Racing and Sports ratings figure of 106 and etched herself in stakes company on that basis.
"She used to do a fair bit wrong and I think it has all come with racing and age," Hayes added.
"She used to be quite keen in her races and she seems to have dropped that habit and it has culminated with her being able to finish a lot more strongly.
"She is probably similar to what Marble Arch did at the same age," he added of the now six-year-old who took out the Group 2 Blamey Stakes (1600m) at Flemington in March.
"Her win in Sydney was dominant in that she was in for a dogfight and didn't give up."
Grid Girl has drawn barrier one in the field of nine while the Lindsay Park team also have Run Harry Run and Roll On High engaged in the Kensington Stakes.
"Roll On High likes Flemington and I think she can bounce back there," Hayes said.